If 15 men take 21 days of 8 hours each to do a piece of work. How many days of 6 hours each would 21 women take, if 3 women do as much work as 2 men?

+1 vote

If 15 men take 21 days of 8 hours each to do a piece of work. How many days of 6 hours each would 21 women take, if 3 women do as much work as 2 men?

+2 votes

15 men take 21 days of 8 hrs. each to do a piece of work.

How many days of 6 hrs. each would it take for 21 women if 3 women do as much work as 2 men?

:

Find the no. of man-hrs to complete the job

15 * 21 * 8 = 2520 man hrs

:

2 man-hrs = 3 women-hrs

therefore

1 women-hr = 2/3 man-hr

:

let d = no. days for these women to do the job

21 * 2/3 * 6d = 2520

84d = 2520

**d = 30 days**

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