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Three taps A, B and C can fill a tank in...

Three taps A, B and C can fill a tank in 12, 15 and 20 hours respectively. If A is open all the time and B and C are open for one hour each alternatively, the tank will be full in

A

6 hours

B

`6(1)/(2)` hours

C

7 hours

D

`7(1)/(2)` hours

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

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