Question

If 21 man build a dam in 2 month 24 days, in how much time will 42 men build the same dam?solution fast​

Answer 1

Answer:

2 month 24 day = ( 2 × 30 ) + 24 = 84 days

If 21 men build a dam in 84 day

then, one man build the same dam in (21×84) days

42 men build the same dam in day = (21×84)/42

=> 21 × 2 = 42 days

Hence, 42 men build the same dam in 42 days or 1 month 12 day

I take 1 month = 30 day because in math question when there is not given year or

month name. Then we should take normally

1 month = 30 days

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