6 boys can complete a piece of work in 16 h. In how many hours will 8 boys complete the same work?
Correct Answer: 12
Explanation:
Given, M1 = 6, M2 = 8 , T1 = 16 h,
and T2 = ?, W1 = W2 = 1
According to the formula.
M1T1W2 = M2T2W1
∴ 6 x 16 x 1 = 8 x T2 x 1
∴ T2 = 16 x 6/8 = 2 x 6 = 12 h
