two pipes A and B can fill a tank in 15 hours and 20 hours respectively while a third pipe C can empty the full tank in 25 hours. All the three pipes are opened in the beginning. After 10 hours, in how much time, will the tank be full?
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QUESTION :
two pipes A and B can fill a tank in 15 hours and 20 hours respectively while a third pipe C can empty the full tank in 25 hours. All the three pipes are opened in the beginning. After 10 hours, in how much time, will the tank be full?
FINAL ANSWER : 2hrs.
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Step-by-step explanation:
2 hours
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