Question

A contractor employed 30 men to do the project in 100 days. But later on he realised that just after 25days only 20% of the work had been completed. How many extra days, than the scheduled time are required?​

Answer 1

Answer: 25 days

Step-by-step explanation:

20% work done in 25 days

100% work done = ?

Let, no. days required to complete whole work be 'x'

⇒20/25 = 100/x

⇒20*x = 100*25

⇒x = 100*25/20

⇒x = 100*5/4

⇒x = 25*5

⇒x = 125 days

no. of extra days required = 125-100= 25 days

I hope it helps (: