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Maths Mcqs

Pipes A and B can fill a tank in 5 and 6 hours respectively. Pipe C can empty it in 12 hours. If all the three pipes are opened together, then the tank will be filled in?

A. 1 13/17 hours
B. 2 8/11 hours
C. 3 9/17 hoursCorrect Answer
D. 4 1/2 hours
Correct Option: C. 3 9/17 hours

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