A building is under construction and the task of paving the blocks is given to a group of men. 40 men can finish the given task in 96 days, working 9 hours/day. If 48 men take up the assignment and commit to finish it in 45 days, how many hours will they need to work per day?
16
18
24
27
Explanation:
Men = M; Days = D; Time/Hours = T; Work = W
M1D1T1W2 = M2D2T2W1
Note that - W2 is on left side and W1 is on right side
Take work done = 1
∴ 40 men x 96 days x 9 hours x 1 = 48 men x 45 days x ? hours x 1
∴ ? = 16 hours = 48 men need to work these many hours per day