A pump can fill a tank will water in 1 hour...

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A pump can fill a tank will water in 1 hour. Because of a leak, it took $$1\frac{1}{3}$$ hours to fill the tank. In how many hours can the leak alone drain all the water of the tank when it is full?

A. 2

B. 1

C. 4

D. 5

Answer: Option C

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