Question

If 25 men take 40 days to complete a piece of work, how long will 20 men take to complete the same​

Answer 1

no. of days 25 men complete a piece of work=40

no.of days 1 men complete a piece of work= 40/25 = 8/5

no. of days 20 men complete a piece of work = 8/5 ×20 = 8×4 = 32 days