A warehouse has 20 packers.Each packer can load 1/8 of a box in 9 minutes. How many boxes can be loaded in 112 hours by all 20 packers ?
A
11/4
B
121/2
C
25
D
20
Correct Answer: 25
Each packer can load a box in 9×8 = 72 min 20 packers in 72 min can load 20 boxes So, 20 packers in 112 min can load = 20×112/72 ≈ 31 boxes