Question

a piece of work can be completed by 45 men in 90 days if only 30 men are available in how many days will it take to complete the same work

Answer 1

hey here is your answer

if 45 men can complete a work in 45 days
than 30 men can complete this work in = 45*90/30 = 135 days

hope it helps
have a good day dear ☺

Answer 2

45 men are needed to complete the work in 90days.

so,1 man can complete the work in 45×90days.

now,30men can complete the work in 45×90/30 days.
135 days