Two taps A and B can fill a tank in 10 hours and 15 hours respectively. If both the taps are opened together, the tank will be full in ?

Two taps A and B can fill a tank in 10 hours and 15 hours respectively

1.	Two taps A and B can fill a tank in 10 hours and 15 hours respectively. If both the taps are opened together, the tank will be full in ?
A.	5 hr
B.	6 hr
C.	4 hr
D.	3 hr
Answer» C. 4 hr

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Two taps A and B can fill a tank in 10 hours and 15 hours respectively. If both the taps are opened together, the tank will be full in ?

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