Four men can do a work in 10 days and 5 women can do the same work in 12 days. How many women must work with 3 men to do the same work in 8 days?
Answer & explanation
Correct answer: option 2
4 men do a work in time = 10 days
4 men 1 day work = 1/10
1 men 1 day work = 1/40
5 women do a work in time = 12 days
5 women 1 day work = 1/12
1 women 1 day work = 1/60
Assume x women are required to complete the work with 3 men in 8 days.
x women and 3 men one day work = 1/8
3/40 + x/60 = 1/8
(9+2x)/120 = 1/8
9+2x = 15
x = 3
The correct answer is Option (2) → 3