Question

30men repair a road in 56 days by working 6 hour daily. In how many days 45 men well repair road by working 7 hours daily?
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Answer 1

30 men do a work in 1hr=1/(56*6)

1 men do a work in 1hr=1/(56*6*30)

45 men do a work in 1hr=45/(56*6*30)

45 men do a work in7hr=(7*45)/(56*6*30)

=1/32

then 45 men repair a road in 32 days by working 7 hrs daily,,,

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