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1. A pump can fill a tank with water in 2 hours. Because of a leak, it took 7/3 hours to fill the tank. The leak can drain all water of the tank in:
- A. 13/3 hrs
- B. 13/3 hrs
- C. 13/3 hrs
- D. 13/3 hrs
Answer: Option D
Explanation:
Work done by the leak in 1 hour
= 1/2−3/7 = 1/14
∴ The leak will empty the tank in 14 hours
= 1/2−3/7 = 1/14
∴ The leak will empty the tank in 14 hours
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