Question

5 persons working 8 hours a day can do a piece of work in 18 days. How many persons will complete it working 9 hours a day in 10 days ?

Answer 1

5 person required days to complete the work = 18 × 8 = 144 days for working 1 hour daily.
1 person required = 144 x 5 = 720 days.
9 hours and 10 days means 90 days of 1 hour.
so person required to complete the work in 9 hours a day in 10 days = 720/ 90 = 8 .
answer 8 persons required.

Answer 2

HI!!

step by step explanation given above