Working for 10 hours per day, 6 men can build a wall in a certain number of days. By
working for how many hours/minutes per day can 12 men build the wall in the same
days?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 5 hours
Let 12 men build the same wall in d hours/day
According to the question
6 men × 10 hours = 12 men × d hours
d = 6×10/12 = 5 hours