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1 vote
Pump B alone fills a tank in 9 hours. Pump C takes 15 hours to fill the same tank alone. If pumps A, B and C are used, the tank fills in 5 hours. How long does it take pump A to fill the the tank alone?

1 Answer

3 votes

Answer:

19

Explanation:

9+15=24

24-5=

19 is the answer

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