Question

6 men can whitewash a building in 5 days.if 18 men are employed,find how many such buildings can be whitewashed in 5 days

Answer 1

Given,

6 men can whitewash 1 building in 5 days.

So, 1 man can whitewash 1/(6*5) buildings in 1 day.

So, 18 men can whitewash (18*5)/(6*5) buildings in 5 days

= 18*5/6*5 = 3.

So, 3 buildings can be whitewashed.

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Answer 2

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Here is the solution:

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6 men can whitewash a building in 5 days

⇒ 6 men = 1 building

Find the number of buildings 1 man can whitewash in 5 days:

6 men = 1 building

1 man = 1/6 building

Find the number of buildings 18 men can whitewash in 5 days:

1 man = 1/6 building

18 men = 1/6 x 18 = 3 buildings

Answer: 18 men can whitewash 3 buildings in 5 days