Two pipes A and B can fill a tank in 12 hours and 18 hours, respective – McqOptions

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1.	Two pipes A and B can fill a tank in 12 hours and 18 hours, respectively. Both pipes are opened simultaneously. In how much time will the empty tank be filled completely ?
A.	10 hours 24 minutes
B.	9 hours 30 minutes
C.	8 hours
D.	7 hours 12 minutes
Answer» E.

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