if 20 men or 30 girls can do a piece of work in 36 days,in how many days will 10 men. and 12 girls do it?​

Answers

Answer 1

Explanation:

20 men can do 1 W in 36 days

=> 20 men can do 1/36 W in 1 day

=> 10 men can do 1/72 W in 1 day.

30 girls can do 1W in 36 days

=> 30 girls can do 1/36 W in 1 day

=> 12 girls can do 1/90 W in 1 day.

Together 10 men and 12 girls can do 1/72 + 1/90 W in 1 day

= 9/360 = 1/40 W in 1 day.

Therefore they need 40 days to do the piece of work.


Related Questions

As a result of the US Navy’s defeat of the British in the Battle of Lake Erie, the British

Answers

Answer:

fought on 10 September 1813, in Lake Erie off the coast of Ohio during the War of 1812. Nine vessels of the United States Navy defeated and captured six vessels of British Royal Navy. ... The American naval victory forces the British to withdraw, and thus ends the British invasion.

Explanation:

Answer:

D is the answer on EDGE

Explanation:

I got it wrong and it does D) attacked Chesapeake Bay

Compare and contrast functionalist theory and conflict theory in their approaches to understanding race-related issues in the United States.

Answers

Answer: their difference is in how they address their resources in the society.

Explanation:

The difference between the functionalism and conflict theory is that the functionalism addressees that each aspect of a society serves as a function and are necessary for the survival of the society while conflict theory states a society is in perpetual class conflict due to the limitations and uneven distribution of it's resources.

Price controls can cause____

A. Efficient Markets
B. Shortages and Surpluses
C. Equilibrium Prices​

Answers

B. Your answer is B, Shortages and Surpluses

Answer:

A: Shortages and surpluses

Explanation:

price control causes shortages and surpluses depending on whether it is the maximum or minimum price control. if it is maximum, there will be surpluses and if it is minimum, there will be shortages due to how much people can afford.

describe the place of the president in national party orginzation

Answers

Answer:

The president helps unite the party with the tools such as access to the media, personal popularity

Explanation:

hope this helps

Where are the Rocky Mountains in Canada?

west
north
south
east

I WANT A SPECIFIC ANSWER NOT SOUTH EAST OR ANYTHING LIKE THAT 51 points

Answers

Answer:

north

Explanation:

Answer:

it is in the southeastern, but since it is not one of the answer choices, you would put north

Explanation:

List five Items that were sold at the medleval falr.​

Answers

Answer:

A lot of times at medieval fairs or market places food, cleaning products, wood work, whetstones, clothing and other household appliances were sold made by the locals or by merchants. Merchants also traded in luxury products, such as silk, leather, perfumes, jewels and glass.

I hope this helps you.

A large star shining brightly in the sky is an effect. What could be a cause?

Answers

Answer:

The star is burning hydrogen very slowly

Answer:

The star is burning hydrogen very slowly

What are the 3 ways to show scale on a map

Answers

There are three primary ways to indicate scale on a map: a representative fraction (e.g., 1:24,000), a verbal scale (e.g., “One inch to the mile”), or a graphic scale bar. Each of these can easily be added to your layout in ArcMap.

Which of the following was not a key figure included in the excerpt above?

Mary Todd Lincoln
Tad Lincoln
President Lincoln
Robert Lincoln

Answers

Answer:

Its Mary Todd Lincoln

Explanation:

The name is not in the passage.

The internet seems especially suited to satisfy which of these needs in a democracy

Answers

Answer:

To be informed.

Explanation:

Democracy is the state where power comes from the people, is exercised by the people and serves the interests of the people. A central feature of democracy is the decision-making by voting of the citizens or some of their representatives. Its cornerstones include freedom of assembly and speech, parity, public participation and the right to life.

Therefore, to guarantee a legitimate and completely transparent process of democratic election, full access to information by the electorate must be guaranteed, allowing each voter to choose the option they consider correct, having previously weighed all the necessary information to decide.

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