15 men can do a work in 15 days working 8 hours a day. N men can do twice the work in 20 days working 10 hours a day. What is the value of N?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 18
According to the question -
15 men can do a work in 15 days working 8 hours per day.
So,
Total work to be done = 15 × 15 × 8 = 1,800
Twice of the work = 2 × 1800 = 3,600
So,
Twice the work done in 20 days working 10 hours per day by = = 18 men