A pipe can fill a tank in 8 hours. Because of a leak at the bottom, it takes 10 hours to fill the tank. In how many hours can the leak alone empty the full tank?
A. 20
B. 40
C. 18
D. 32
1 answer
Best answer
Answer: B. 40
Answer: (B) 40
Leak rate = \( \frac18 - \frac1{10} = \frac{1}{40} \). The leak empties the tank in 40 hours.
Doubtly AI
· 27 Oct 2026
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