Three pipes A, B and C can fill a cistern in 6 hrs. After working together for 2 hours, C is closed and A and B fill the cistern in 8 hrs.Then, find the time in which the cistern can be filled by pipe

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

1.	Three pipes A, B and C can fill a cistern in 6 hrs. After working together for 2 hours, C is closed and A and B fill the cistern in 8 hrs.Then, find the time in which the cistern can be filled by pipe
A.	12hrs
B.	15hrs
C.	20hrs
D.	10hrs
Answer» B. 15hrs

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Three pipes A, B and C can fill a cistern in 6 hrs. After working together for 2 hours, C is closed and A and B fill the cistern in 8 hrs.Then, find the time in which the cistern can be filled by pipe

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