Question

6 men can completes a work in 7 days how many days will it take 21 men to do the job

Answer 1

6 men does the work in 7 days
1 man does the work in (7÷6)days
So 21 men need [(7×21)÷6] days
= Answer

Answer 2

6 men can do a work in 7 days.
21 men can do work in x days.
It is directly proportion.
Thus,6/21=7/x
=>6x=21*7
=>x=147/6=24.5 days......!!
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