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



Thirty men take 20 days to complete a job working 9 hours a day.How many hour a day should 40 men ..

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

Thirty men take 20 days to complete a job working 9 hours a day.How many hour a day should 40 men ..

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

Thirty men take 20 days to complete a job working 9 hours a day.How many hour a day should 40 men ..

Answer / suraj sharma

b)7 1/2 hrs

Is This Answer Correct ?    20 Yes 14 No




Thirty men take 20 days to complete a job working 9 hours a day.How many hour a day should 40 men ..

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

Thirty men take 20 days to complete a job working 9 hours a day.How many hour a day should 40 men ..

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 ?    6 Yes 3 No

Thirty men take 20 days to complete a job working 9 hours a day.How many hour a day should 40 men ..

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

Thirty men take 20 days to complete a job working 9 hours a day.How many hour a day should 40 men ..

Answer / prachi

6.75

Is This Answer Correct ?    3 Yes 2 No

Thirty men take 20 days to complete a job working 9 hours a day.How many hour a day should 40 men ..

Answer / iswariya

7 1/2 hrs

Is This Answer Correct ?    9 Yes 14 No

Thirty men take 20 days to complete a job working 9 hours a day.How many hour a day should 40 men ..

Answer / guest

b 7 1/2hrs

Is This Answer Correct ?    1 Yes 6 No

Thirty men take 20 days to complete a job working 9 hours a day.How many hour a day should 40 men ..

Answer / mathiazhagan

B) 7 1/2 hrs

Is This Answer Correct ?    4 Yes 11 No

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