(3) Days taken by 7 men and 3 women to complete the work = 10 days Days taken by 8 men and 2 women = 8 days Let the total work = LCM (10, 8) = 40 Work completed by 7 men and 3 women in 1 day =
40
10
= 4 units Work completed by 8 men and 2 women in 1 day
40
8
= 5 units Hence, a man completes
7
10
units of work in 1 day. ∴ Work completed by 12 men =