Thirty men take 20 days to complete a job working 9 hours a
day. How many hour a day should 40 men work to complete the job?
(a) 8 hrs
(b) 7 1/2 hrs
(c) 7 hrs
(d) 9 hrs
Answer Posted / rahul parmar
30 x 20 x 9 = 5,400 man hours required for the job
You’ve given us 40 men and 20 days:
5400 / 40 / 20 = 6.75
So they would have to work 6.75 hours a day to complete the job.
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