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MCQ Problems / Explanations



Jese Leos

Helpdice Team

Four pipes A, B, C and D can fill a tank in 6, 8, 10 and 12 hrs respectively. If pipe A was opened at 7:00 AM , B at 8:00 AM, C at 9:00 AM and D at 10:00 AM. Approximately at what time was the tank filled?

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