A tank which has a leak in the bottom is filled in 20 hours. Had there been no leak the tank would have been filled in 15 hours. The leak can empty the full tank in:
Q1. A tank which has a leak in the bottom is filled in 20 hours. Had there been no leak the tank would have been filled in 15 hours. The leak can empty the full tank in:
Answer: 60 hrs.
Explanation: With leak: 1/20 net fill rate. Without leak: 1/15 fill rate. Leak rate = 1/15 − 1/20 = 1/60. The full tank empties in 60 hours.