5 men working 6 hours a day can dig a trench 180m long in 4 days. How many days would 8 men working 3 hrs a day take to dig a trench 220m long​

Answers

Answer 1

assuming efficiency of each man to dig trench, in one day, for one hour is constant,

[tex] e=\frac{180}{4\times6\times5}=\frac{3}{2}[/tex]

so one man, working for one hour in one day can dig 1.5 m

so 8 men, working 3 hours a day and will take, say $d$ number of days and efficiency will be constant. so,

$\frac32=\frac{220}{8\times3\times d}$

$\implies d=\frac{55}9=6.12$


Related Questions

Which led to increased turmoil between Jews and Arabs? Select three options. the creation of Israel anti-Semitism in Germany the Balfour Declaration the Camp David Accords Jewish emigration to Palestine

Answers

The correct answers are A) the creation of Israel. C )the Balfour Declaration. E) Jewish emigration to Palestine.

What led to increased turmoil between Jews and Arabs was the following: the creation of Israel, )the Balfour Declaration, and Jewish emigration to Palestine.

For instance, n 1917, Great Britain supported the idea that the Jews must have their own territory. Then the government issued the Balfour Declaration on November 2, 1917. Basically, the British promoted the idea of having a territory exclusively for the Jewish people. This declaration infuriated the Arab world, and rejected this idea, causing too much trouble in the Middle East region. Since that time and due to the fact that indeed, the Jewish established in the Palentine territories in Jerusalem, has been the cause of terrible conflicts between Israel and Palestine.

The events that led to increased turmoil between Jews and Arabs are: - The creation of Israel.

- The Balfour Declaration.

- Jewish emigration to Palestine.

The turmoil began during the 20th century after the WWII when Allied promised Jews to create the State of Israel. During the early 20th century, Zionism called for the self-governing state in some parts of the Land of Israel as Jew thought it was their right. The Balfour Declaration by the British in 1917 announced support for the building of a Jewish national home in Palestine.Jewish immigration in Palestine created chaos among the Arabs as they forced to leave.

Therefore we can conclude that the arrival of the Jews with declare of Isreal as the state increased a turmoil.

Thus option A, C and E are the correct answer.

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We study history by Era because

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Answer:

An era is a span of time defined for the purposes of chronology or historiography, as in the regional eras in the history of a given monarchy, a calendar era used for a given calendar, or the geological eras defined for the history of Earth. We study history by era to make it easy to divide periods in the past.

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Kingman Reef is a U.S. territory that is south of Hawaii. Which letter on the map represents the location of Kingman Reef? D A C B

Answers

The correct answer is A

Explanation:

Kingman Reef as Hawai is located in the Pacific Ocean, which is between the American continent and Asia and Australia. Moreover, Kingman Reef is located just above the Equator line, which divides the North and South hemisphere on Earth and 6506 kilometers South to Alaska. Also, this territory covers around 0.03 [tex]km^{2}[/tex] and belongs to the U.S. as other Islands in the zone including Hawai. According to this, the location of Kingman Reef is shown by letter A, which is in the Pacific Ocean (between the Americas and Asia), and to the South of Alaska.

Answer:

The answer is A I hope this helps! :)

Explanation:

After creating an effective research question, what should a historian have? the answer to the research question a vague thesis with broad research goals the evidence needed to craft an argument a better understanding of potential research problems

Answers

Answer:

Explanation:

a better understanding of potential research problems

Answer:

a better understanding of potential research problems

Explanation

What legal and political idea is contained in this edict from Hammurabi’s Code? A. limits of power B. protection from unreasonable search C. presumption of innocence D. right to present evidence

Answers

Answer:

D. right to present evidence

Explanation:

It said she had to have evidence in order to prove her "prejudice" (the way she feels about something)

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what was the significance of the British expansion in india

Answers

Answer:

They could now maintain a large army at the cost of the Indian states. This enabled them to fight wars far away from their own territories, since any war would occur in the territories either of the British ally or of the British enemy.

TRUE OR FALSE French debt under Louis XVI was high because the French government helped fund the American Revolution.

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Answer:

yes it was false

what does “ rise and fall of a nation rests with every one of its citizens “ meaning?

Answers

Answer:

This saying means that the evolution of a nation or its decline also weighs responsibility on every citizen. Even though the participation of a citizen may be small in comparison to the government, everyone can contribute whether or not a nation will rise above or fall.

Explanation:

Comparing our modern society in the United States to that of ancient Mesopotamia, how have laws changed over time?

Answers

Answer:

By roughly 6000 to 8000 years ago, agriculture was well under way in several regions including Ancient Egypt, around the Nile River; the Indus Valley civilization; Mesopotamia, between the Tigris and Euphrates rivers; and Ancient China, along the Yellow and Yangtze rivers. This is because the regular river floods made for fertile soil around the banks and the rivers could also supply fresh water to irrigate crops. It’s no coincidence that as agriculture allowed for denser and denser populations along with more specialized societies, some of the world’s first civilizations developed in these areas as well.

Explanation:

Malcolm X: a. felt that the Black Power movement went too far. b. worked with the Southern Christian Leadership Conference. c. insisted that blacks have economic and political autonomy. d. supported integration efforts. e. was inspired by the efforts of Booker T. Washington.

Answers

Answer:

c. insisted that blacks have economic and political autonomy.

What effects did the Magna Carta have on English government? Check all that apply.

It limited the power of the king.
It gave the king’s government more control.
It established the right to a trial by jury.
It led to the creation of a legislative branch.
It reduced the rights of citizens.

Answers

Answer:

A C D

Explanation:

The effects caused by Magna Carta on the English government are given below.

It limited the power of the king.It established the right to a trial by jury.It led to the creation of a legislative branch.

What were the effects of the Magna Carta?

The Magna Carta stated that people could not be punished for crimes unless they were lawfully convicted. The charter also gave the barons the right to declare war on the king if he did not follow its provisions.

What was the effect of the Magna Carta in England?

The Magna Carta was a document signed by King John in 1215. This document made kings subject to the law and stated that people could not be deprived of their lives, liberty or property unless judged by others (law). This document influenced the US Constitution by having an effect on the 10 Amendments.

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What happened in 1914? A.WW1 B.WW2 or C.Allies vs Axis

Answers

Answer:Answer is A, WW1

Explanation:

Answer:

A

Explanation:

world war 1 started in 1914 and lasted 4 years, it ended in 1918.

what are two groups who discovered america by crossing the atlantic before columbus? (not the vikings)

Answers

Answer:

Polynesians  and Romans

Explanation:  

In 1492, Christopher Columbus discovered America that changed the world forever. It commonly understood that Vikings and Polynesians got there before him.

Ancient Polynesian were navigators who sailed as far as Hawaii, New Zealand, and Easter Island, which required them to cross an ocean in small boats.

The evidence of chicken bones in America led the first archaeological evidence for contact between Polynesians and the indigenous peoples of South America.

The evidence for ancient Roman in the Americas comes from the artifact known as the Tecaxic-Calixtlahuaca head. The head is a terracotta figure that resembles a similarity to the Roman origin.

To truly understand the complexity of a historical event, historians must consider the
(circumstances surrounding) of the event.

Answers

Answer:

Yes.

Explanation:

there are a number of reasons and small incidents before the happening of historical event. to understand a particular historical event, the historians must see the circumstances and reasons due to which the historical event occurs. There are various reasons behind the historical event so it is necessary for the historian to see that reasons in order to fully understand the event.

Write these decimals in order from least to greatest 4.52, 5.024, 5.042

Answers

The answer is 4.52, 5.024, 5.042

Answer:

4.52 5.024 5.042

Explanation:

the number before the decimal is the first thing to look at from there you want to go in order of what numbers following are large

When did Captain cook discover Australia

Answers

Answer: 1770.

Explanation: The final secret goal was to continue the search for the Great South Land. Cook reached the southern coast of New South Wales in 1770 and sailed north, charting Australia's eastern coastline and claiming the land for Great Britain on 22nd August 1770.

Between 1920 and 1940,the quest for racial equality and a search for self-identity among African-Americans inspired the ________,an upsurge of creative expression in the arts centered in a part of Manhattan occupied largely by African-Americans.A) Nation of IslamB) Great MigrationC) Harlem RenaissanceD) Niagara Conference

Answers

The correct answer is C) Harlem Renaissance

Between 1920 and 1940, the quest for racial equality and a search for self-identity among African-Americans inspired the  Harlem Renaissance, an upsurge of creative expression in the arts, centered in a part of Manhattan occupied largely by African-Americans.

Many historians consider the Harlem Renaissance as a folden age in the culture of black people in the United States for the many kinds of artistic expressions that surged in music and literature. Many African Americans that lived in the South migrated to the North of the country.

Among the most important figures of this period, we can name writer Langston Hughes, writer Zorah Neale Hurston, poet Countee Cullen, and musician Louis Armstrong.

Evaluate Haymitch as a coach and mentor. Does he make you feel optimistic or
pessimistic about Katniss and Peeta's chances of survival? Why?

Answers

Answer:

Haymitch makes me feel optimistic about Katniss and Peeta's chances of survival, because he manages to improve the skills of each of them according to their needs and personality. So that the skills and confidence is high.

Explanation:

Haymitch has several personal problems and many traumas acquired due to his past experiences. This causes him to adopt destructive behaviors such as sleep deprivation and alcoholism that gets worse and worse. At first glance we have the feeling that he will be a terrible mentor, but with the progress of reading, we can see that he seeks to stimulate the best characteristics of Katniss and Peeta, without leaving aside the characteristics and personalities of each one, which he believes be a positive differentiator for the battle they will face. It focuses on stimulating the skills of both and strengthening the spirit of both, which allows us to have an optimistic notion about their survival.

Which compromise led to the South's agreement to accept Hamilton's plan? A) state debts would not be paid B) The Bank of the United States would be located in Georgia. C) The United States capital would be moved further south. D) Three-fifths of state debt would be paid.

Answers

Answer:

The answer is C. The united states capital would be moved further south

Explanation:

During the Cuban Missile Crisis, President John F. Kennedy and Premier Nikita Khrushchev managed to avert a disaster. Which disaster did they avert?

Answers

Answer:

President Kennedy decided to place a naval blockade, or a ring of ships, around Cuba. The aim of this "quarantine," he called it, was to prevent the Soviets from bringing in more military supplies. He enforced the removal of the missiles already there and the destruction of the sites.

3. Which of the following is not a feature of the election system in India? *
1 Universal Adult Franchise
2 Secret Voting
3 Reservation of seats
4 Communal Electorate​

Answers

Answer:

HELLO!

Hope this helps you!

Ans-2)communal electorate

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2. Which U.S. ideals would be most attractive to potential allies?_

Answers

Answer:

Good trading agreements

Explanation:

Which of the following describes the Mycenaean civilization? Multiple Choice burial of rulers in giant beehives construction of gigantic fortifications on the Greek mainland war with Troy that forms the setting for both the Iliad and the Odyssey All these answers are correct.

Answers

Answer:

Correct Answer:

4. All these answers are correct.

Explanation:

Mycenaean civilization refers to a Bronze Age civilization on mainland Greece, inhabiting the area from around 1600-1100 BCE. And, also, the name Mycenaean refers to the city of Mycenae, which was excavated by Heinrich Schliemann beginning in 1876. Schliemann is also well-known for his discovering and excavating the city of Troy in Asia Minor.

What is the “melting pot” theory?

Answers

Answer:

The melting pot theory is when multiple people from different places, heritages, and cultures come together and unite

Explanation:

Explanation:

Melting Pot: is a metaphor for describing the assimilation of immigrants into American culture. It relies on the image of people from different cultures and backgrounds mixing and melting together into one big cultural pot. The melting pot metaphor comes from the fusing together of melted metal material.

The statement below was made by Thomas Jefferson in an 1801 speech. The support of the State governments in all their rights…I consider one of the essential principles of our Government… How is Jefferson's view reflected in the U.S. Constitution?

Answers

Answer:

C) The U.S. Constitution says powers not given to the federal government belong to the states.

Explanation:

The Jefferson's view reflected in the U.S. Constitution is that the U.S. Constitution says powers not given to the federal government belong to the states.

What is the Constitution ?

A constitution is a collection of guiding ideas or accepted precedents that serve as the foundation for a polity, organization, or other sort of body's legal system and frequently specify that institution is to be governed.

The Convention's draught of the Constitution had as one of its main goals the creation of a government with sufficient authority to operate on a national level, but without excessive power.

The U.S. Constitution specifies that powers not delegated to the federal government belong to the states. Jefferson believed that if these powers were transferred to the federal government, basic rights would be in jeopardy.

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Which two Mediterranean islands provided grain for the Romans?

Answers

Answer:

Corsica and Sardinia

Explanation:

While Sardinia provided Rome with much of the grain supply during the times of the Roman Republic, Corsica did as well with wax to the Empire. Moreover, among all the Western Roman provinces, Sardinia provided the biggest number of sailors to the Roman military fleets.

GIVING 30 POINTS! URGENT. The map shows the development of the Roman Empire. How can the Roman Emprie's expansion be described? A) It reached every continent. B) It doubled the size of the republic. C) Roman rule finally reached Africa. D) Growth in Asia was reduced.

Answers

Answer:

B) It doubled the size of the republic.

Explanation:

It reached every continent. False

The roman empire ruled Asia, specially Israel and Europe and Africa. The romans started ruling Africa even before they became an empire.

Roman rule finally reached Africa. False

Even in the time of the roman republic Africans were ruled by the republic.

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The correct answer is option B : It doubled the size of the republic.

The roman empire ruled Asia, specially Israel , Europe and Africa. The romans started ruling Africa even before they became an empire.

Why other options are incorrect ?By ruling over Africa , Asia , Israel and Europe , they started to become stronger and thus it helped them to double the size of the republic.

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why do you think india and pakistan were so concerned about winning the accession of the various princely states?

Answers

Answer:

In order to gain more power.

Explanation:

India and Pakistan were so concerned about winning the accession of the various princely states because they want to increase their area and resources. Both of the countries wanted to include the princely states in their country due to gain more power in the region. These princely states were rich in resources and these countries earn more money from their resources so both were very concern about the winning the accession of the various princely states.

Which phase of the business cycle would be marked by an increase in productivity while employment and profits also rise?
A. inflation
B. contraction
C. expansion
D. recession

Answers

Answer:

c.expansion

Explanation:

hope this helps  you :)

Answer:

expansion

Explanation:

TRUE OR FALSE The Enlightenment in the American Revolution rejected traditional religious, political and social values.

Answers

Answer:

False

Explanation:

Values are moral standards acceptable in various spheres of life. It helps in making individuals do the right thing and could be traditional , religious, political and social depending on the subject topic involved.

The Enlightenment in the American revolution ensured that good reforms were achieved in tacking inequality and discrimination. This is the right thing to do and helps to strengthen the value systems and not to reject it.

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