7 men can pack 14 boxes in 6 days by working for 7 hours a day. In how many days can 14 men pack 18 boxes if they work for 9 hours a day?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 3
(M1 × D1 × H1)/W1 = (M2 × D2 × H2)/W2
(7 × 6 × 7)/14 = (14 × D2 × 9)/18
D2 = 3 days