Pipes A and B, when working together can fill an empty tank in 24 hours. They work together for 8 hours and then B is stopped but A continued to work. It took a total of 28 hours to fill the tank. How long would it take A to fill the empty tank alone?

Pipes A and B, when working together can fill an empty tank in 24 hour

1.	Pipes A and B, when working together can fill an empty tank in 24 hours. They work together for 8 hours and then B is stopped but A continued to work. It took a total of 28 hours to fill the tank. How long would it take A to fill the empty tank alone?
A.	30 hours
B.	29 hours
C.	28 hours
D.	31 hours
Answer» B. 29 hours

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Pipes A and B, when working together can fill an empty tank in 24 hours. They work together for 8 hours and then B is stopped but A continued to work. It took a total of 28 hours to fill the tank. How long would it take A to fill the empty tank alone?

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