One tap can fill a cistern in 2 hours and another tap can empty the ci – McqOptions

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1.	One tap can fill a cistern in 2 hours and another tap can empty the cistern in 3 hours. How long will they take to fill the cistern if both the taps are opened?
A.	5 hrs
B.	6 hrs
C.	7 hrs
D.	8 hrs
Answer» C. 7 hrs

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