16 men can paint 15 walls in 45 days. In how many days can 20 men paint 20 walls?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 48
16 men can paint 1 wall in (45/15) i.e. 3 days.
Also, 1 man can paint 1 wall in = 3 × 16 = 48 days
Thus, 20 men can paint 1 wall in = (48/20) = 2.4 days
Thus, 20 men can paint 20 walls in = 2.4 × 20 = 48 days