Three pipes A, B and C can fill a cistern in 6 hours. After working at it together for 2 hours, C is closed and A and B can fillit in 7 hours. The time taken by C alone to fill the cistern is

Three pipes A, B and C can fill a cistern in 6 hours. After working

1.	Three pipes A, B and C can fill a cistern in 6 hours. After working at it together for 2 hours, C is closed and A and B can fillit in 7 hours. The time taken by C alone to fill the cistern is
A.	10hrs
B.	5hrs
C.	14hrs
D.	1hr
Answer» D. 1hr

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Three pipes A, B and C can fill a cistern in 6 hours. After working at it together for 2 hours, C is closed and A and B can fillit in 7 hours. The time taken by C alone to fill the cistern is

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