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

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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 fill the remaining part in 7 hours. The number of hours taken by C alone to fill the cistern is:
A.	12
B.	14
C.	16
D.	18
Answer» C. 16

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