Question

2 men and 3 women together or 4 men together can complete a piece of work in 20 days 3 men anf 3 women can finish the same work in how many days

Answer 1

4M=20, =>M=4*20=80
2M=3W,
2M/3=W
3M+3W=3M+(2M*3/3)
3M+2M=5M
(M=1/80)
5M=5/80=1/16
3M and 3W can do it in 16days

Answer 2

2m+3w=4m

3w=2m

3m+2m=5m

4m=20

1m=80

5m=80/5

5m=16 days