Question

If 4 men build a wall in 9 days, then the number of men required to build the same wall in 12
days is _______

Answer 1

Answer:

12 men would take a longer time.

20 men can build a wall in 9 days.

1 man can build a wall in (20 × 9) = 180 days.

12 men can build a wall in (180 ÷ 12) = 15 days.