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
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Answer Posted / sanjeev kumar
since 30 men take 20 days to complete this job working 9
hours per day
so (30*9)/40
=27/4
= 6 3/4 hours
so option is not correct...
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