Question

A work can be completed by 18 boys in 24 days. If 6 boys leave after working for 12 days, then how many days will be needed to complete the remaining work?

Answer 1

18 boys can complete the work in 24 days..

so 18×24 = 432(man days)

now 6 boys leave after working for 12 days,

so work done in these

12days=> 18×12 = 216(MD)

now remaining work=> 432-216 = 216(MD)

after 6 boys left, work done per day will be 12(MD)

time taken=> 216/12 = 18 days