[PPSC SO (Teaching), SO (DNA),& SA (DNA) 2023]

37. A tap A can fill a tank of 600 liters capacity in 30 minutes. Another tap B can fill the same tank in 40 minutes. If A and B together fill the tank in 30 minutes and at the same time some water get wasted due to leakage in the tap, then how much water get wasted every minute?

1. 27 liters

2. 21.5 liters

3. 15 liters

4. None of these

Correct Answer :

15 liters