36 persons can do a work in 10 days, working 6 hours a day. In how many days will 24 persons, working 9 hours a day complete the work?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 10 .
Total work = 36 persons × 10 days × 6 hours = 2160 person-hours
Now, 24 persons working 9 hours/day → Work done per day = 24 × 9 = 216 person-hours/day
Required days = 2160 ÷ 216 = 10 days