# How many men need to be employed to complete a job in 5 days, if 15 men can complete 1/3 of the job in 7 days ?

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by Nazee

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by Nazee

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15 men can complete 1/3 job in 7 days

15 man can finish the job in = 7*3 = 21 days

1 man can finish the job = 21*15 = 315 days

So 1 man can do in 1 day = 1/315 of the work

1 man can do in 5 days = 1/315 * 5 = 1/63 the work

In 5 days, 1/63 of the work is done by 1 man

So in 5 days, 63 men can finish the work.

15 man can finish the job in = 7*3 = 21 days

1 man can finish the job = 21*15 = 315 days

So 1 man can do in 1 day = 1/315 of the work

1 man can do in 5 days = 1/315 * 5 = 1/63 the work

In 5 days, 1/63 of the work is done by 1 man

So in 5 days, 63 men can finish the work.

15 men can complete the same job in = 7*3 days

= 21 days

1 man can complete the job in = 21*15 days

= 315 days

therefore , 1 man can complete in 1 day = 1/315 parts of the work

1 man can complete in 5 days = 1/315 * 5 of the work

= 1/63 of the work

therefore, in 5 days, 63 men can complete the work. [1/(1/63)]