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 / komal
the answer is <c>
i go with aneesh's answer but (45*3)/20=6.75=7(app)
| Is This Answer Correct ? | 27 Yes | 5 No |
Answer / 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 |
Answer / nimo
i believe that 30 men ---20days
9 hr/day
40 men--- 20 days
x hr/day
there fore 30*9 = 40*x
x= 6.75 which is more like 6 hrs 75 mins
which is not applicable , therefore
its 7 hrs 15 mins ( 7 1/2 app ) to
be in the safe side.
| Is This Answer Correct ? | 9 Yes | 4 No |
Answer / kunal
The solutions given , comes out to be 6.75 and not 7 or 7.22...Check it out and help with me out with the right solution..
| Is This Answer Correct ? | 4 Yes | 1 No |
Answer / mr h
Forty men should still work 9 hours a day until the jobs
finished, thats obviously the length of their shift.
| Is This Answer Correct ? | 2 Yes | 2 No |
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