A, B and C are three pipes connected to a tank. A and B together fill the tank in 6 hrs. Band C together fill the tank in 10hrs. A and C together fill the tank in 72 hrs.ln how much time will A, B and

A, B and C are three pipes connected to a tank. A and B together fi

1.	A, B and C are three pipes connected to a tank. A and B together fill the tank in 6 hrs. Band C together fill the tank in 10hrs. A and C together fill the tank in 72 hrs.ln how much time will A, B and
A.	30hrs
B.	20hrs
C.	10hrs
D.	40hrs
Answer» B. 20hrs

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