Pipes A and B can fill a tank in 8 and 24 hours respectively. Pipe C can empty it in 12 hours
Pipes A and B can fill a tank in 8 and 24 hours respectively. Pipe C can empty it in 12 hours. If the three …
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Pipes A and B can fill a tank in 8 and 24 hours respectively. Pipe C can empty it in 12 hours. If the three …