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Three pipes A, B and C together can fill...

Three pipes A, B and C together can fill a tank in 6 hours. C is closed after 2 hours of opening. A and B can fill the remaining part of the tank in 7 hours. In how much time C alone can fill it?

A

14 hours

B

15 hours

C

16 hours

D

17 hours

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The correct Answer is:
A
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