Question

A contracter undertakes to make a road in 40 days and employes 25 men. After 24 days he find only one third hiw many extramen should he employe so that he he is able to complete the work 4 days at laour.

Answer 1

Solution 1

25 men can complete 13

work in 24 days

Suppose x men can complete 23 work in 12 days

25×2413=x×1223 25×24=x×122 x=100

Required extra men =100−25=75

Solution 2

25 men can complete 13 work in 24 days

=> 25 men can complete 23 work in 48 days

=> 25×4=100 men can complete 23 work in 484=12 days

Required extra men =100−25=75