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A cistern can be filled by pipes A an...

A cistern can be filled by pipes A and B in 4 hours and 6 hours respectively. When full, the cistern can be emptied by pipe C in 8 hours. If all the pipes were turned on at the same time, in how much time will the cistern be filled?

A

`40/7` hours

B

`24/7` hours

C

`16/7` hours

D

`31/7` hours

Text Solution

Verified by Experts

The correct Answer is:
B
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