Question

15 men can build a wall in 20 days. How long will 25 men take to build the
same wall?​

Answer 1

Explanation:

no of men no of days

15 20

25 let be x

it is in indirect proportion

15/25=x/20

do cross multiplication

25*x=20*15

25x=300

x=300/25

x=12

therefore ot will take 12 day to complete the same wall by 25 men.