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
Answers were Sorted based on User's Feedback
Answer / komal
the answer is <c>
i go with aneesh's answer but (45*3)/20=6.75=7(app)
|Is This Answer Correct ?||20 Yes||1 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 ?||25 Yes||11 No|
Answer / suraj sharma
b)7 1/2 hrs
|Is This Answer Correct ?||20 Yes||14 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 / nimo
i believe that 30 men ---20days
40 men--- 20 days
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 ?||6 Yes||3 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||1 No|
Answer / prachi
|Is This Answer Correct ?||3 Yes||2 No|
Answer / iswariya
7 1/2 hrs
|Is This Answer Correct ?||9 Yes||14 No|
Answer / guest
b 7 1/2hrs
|Is This Answer Correct ?||1 Yes||6 No|
Answer / mathiazhagan
B) 7 1/2 hrs
|Is This Answer Correct ?||4 Yes||11 No|
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