medium · GMAT Quant
Pump A can fill a tank in 4 hours, while Pump B can fill the same tank in 6 hours. Both pumps run together for 1 hour, after which Pump A is turned off.
How many additional hours will it take Pump B to finish filling the tank?
- 4.2
- 2.5
- 5.0
- 3.0
- 3.5
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