Fill a tank individually in 10 min & 20 min. However, there is leakage at bottom which can empty a filled tank in 40 min. If the tank is empty, how much time both the taps take to fill the tank?

Fill a tank individually in 10 min & 20 min. However, there is leak

1.	Fill a tank individually in 10 min & 20 min. However, there is leakage at bottom which can empty a filled tank in 40 min. If the tank is empty, how much time both the taps take to fill the tank?
A.	8 min
B.	9 min
C.	10 min
D.	11 min
Answer» B. 9 min

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Fill a tank individually in 10 min & 20 min. However, there is leakage at bottom which can empty a filled tank in 40 min. If the tank is empty, how much time both the taps take to fill the tank?

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