65 men can reap a field in 24 days. If the job
is to be done in 20 days, how many more men
need to be hired?
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in 24 days a field reap by 65 men
in 1 day a field reap by 65×24
in 20 day a field reap by (65×24)÷20
=78
more men need to be hired=78-65
=13 men.
ans:13 men.
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