Multiple choice

4 men and 6 momen together can complete a work in 8 days while 3 men and 7 women together can complete it in 10 days. 20 women working together will complete it in.

  1. 20 days

  2. 25 days

  3. 32 days

  4. 24 days

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Let m = work done by 1 man in 1 day, w = work done by 1 woman in 1 day. From equations: 4m + 6w = 1/8 and 3m + 7w = 1/10. Solving gives w = 1/400. So 20 women complete the work in 20 days.