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45 days

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Q: If it takes 7 men 5 days to paint 3 houses how long will it take 10 men to paint 15 houses?
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If 10 people can paint 60 houses 120 days how many days will it take 5 people to paint 30 houses?

This was a previous incorrect answer*DIVIDE BY 2! everything is in half. half the people half the houses then it stands to reason HALF THE DAYS!!!!! the answer is 60*.....Actually the correct answer is 120 days. You must analyze the relationship of people per house (10 people build 60 houses=6 houses per person over time span). To prove this just imagine if the question asked how long 1 person would take to build 6 houses. You would not simply divide by 10 to get 12 days.


It takes Alvin 3 hours to paint a room it takes Bernie 5 hours to do the same job how long would it take them to do the job together?

Multiply 3 and 5 to get a Least Common Multiple. 15. So you find how many rooms can Alvin paint in 15 hours (5 rooms). Same with Bernie (3 rooms). That means they can paint 8 rooms in 15 hours. Since you want to find "how long it would take," you flip the rate over. In 15 hours they can paint 8 rooms. Reduce if you want, 15/8= 1.875 hour to paint one room.


If it takes 10 people 10 days to dig a hole how long will it take 5 people to dig half a hole?

5 days


How long would it take to paint 2000 sq ft?

Time how long it takes to paint 10 sq ft. To paint 2000 sq ft would therefore take 200 times as long. With a roller on a prepared wall and a competent painter then 10 sq ft could be painted in less than 1 minute so 2000 sq ft would take 3 -4 hours.


If it takes 6 men 6 days to dig 6 holes how long would it take 1 man to dig 1 hole?

6 days.

Related questions

Cox takes two days to paint a house and Fox takes four days to paint the same house If both Cox and Fox paint it together how long will they take to complete the job?

One day.


If it takes 21 men 18 days to paint a bridge how long would it take 9 men to paint the same bridge?

It would take 9 men 42 days.


How long does it take for rubber base paint to cure?

According to Martha Stewart it takes at least thirty days


If 10 people can paint 60 houses 120 days how many days will it take 5 people to paint 30 houses?

This was a previous incorrect answer*DIVIDE BY 2! everything is in half. half the people half the houses then it stands to reason HALF THE DAYS!!!!! the answer is 60*.....Actually the correct answer is 120 days. You must analyze the relationship of people per house (10 people build 60 houses=6 houses per person over time span). To prove this just imagine if the question asked how long 1 person would take to build 6 houses. You would not simply divide by 10 to get 12 days.


12 men can build 5 houses in 75 days how long will 20 men take to build such houses?

Building 5 houses takes 12 x 75 ie 900 man-days. 20 men will thus take 900/20 ie 45 days.


It takes 5 identical robots,12 days to paint a long straight wall. How many robots would it take to paint the wall in 20 days?

this was difficult it got me a bit confused but it would take about 8 days


If it takes 45 minutes to paint a wall that is 12x12 how long will it take to paint a wall that is 15x16?

1 hour


How long it takes to get from to the moon?

it takes about 36 days to get to the moon


It takes Sal 5 hours to paint a house It takes Sal 3 hours to paint the same house How long will it take to paint the house if both of them work together?

It would take them 4 hours to paint the house together.


15 carpenters restore 45 houses in 90 days how long would it take for 5 carpenters to restore 30 houses?

180 days


How long it takes a fly to have a baby?

it takes approximately 10 days


How does watercolor dry fast?

Watercolour has a short drying time. It only takes minutes for the paint to dry. The time it takes for the water to dry is how long it will take for the paint to dry.