Question

10 men can do a piece of work in 20 days. 10 women can do the same amount of work in 30 days. If there is 25% increase in the efficiency of man and 12.5% increase in the efficiency of woman, time taken by them together to finish the same work is?​

Answer 1

Answer:

15 women take 12 days, so 1 woman does 1/ 15 x 1/12=1/180th per day .. Together, 1 man and 1 woman do: 1/150 + 1/180=12/1800 + 10/ ...