Pipes A and B can fill a tank in l 0 hours and 15 hours respectively.Both together can fill it in _____________ hrs.

Pipes A and B can fill a tank in l 0 hours and 15 hours respectivel

1.	Pipes A and B can fill a tank in l 0 hours and 15 hours respectively.Both together can fill it in _____________ hrs.
A.	8hrs
B.	6hrs
C.	5hrs
D.	2hrs
Answer» C. 5hrs

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Pipes A and B can fill a tank in l 0 hours and 15 hours respectively.Both together can fill it in _____________ hrs.

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