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 / aneesh
ans : (b)
30 mem in 180hrs in 20 days
efficiency of each person is 1/180*30
efficiency of 40 mem is 40/180*30 = 1/45*3
no.of hrs per day = 45*3/20 = 7.22 hrs (app)
| Is This Answer Correct ? | 30 Yes | 15 No |
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