Question

A swimming pool can be filled in 4 hours by 12 pumps of the same types.
1 if 2 pumps stop working then in how many hours will it fill?

Answer 1

Answer: 5 Hours

Step-by-step explanation: If we want to fill the pool in 1 hour we will require 4 x 12 = 48 pumps

Now we got how many pumps will fill the pool in 1 hour.

Now we will take out how much time 1 pump will take to fill the pool

Now we will do the following: 12 ÷ 4 = 3 ÷ 2 = 0.5

0.5 x 10 = 5 hours