12 water pumps can make a water tank empty in 20 minutes. But 2 pumps are out of order. How long will the remaining pumps take to make the tank empty...? Mcqs

12 water pumps can make a water tank empty in 20 minutes. But 2 pumps are out of order. How long will the remaining pumps take to make the tank empty...?

(A) 20 minutes

(B) 24 minutes

(C) 28 minutes

(D) None of these

Source: This question is taken from the Assistant BS-16 Special Education Department