easy · GMAT Quantitative Reasoning
Pump A can fill half a tank in 3 hours, and Pump B can fill a third of the same tank in 4 hours. The two pumps work together at these rates.
How many hours will it take both pumps to fill the entire tank?
- 7 hours
- 5 hours
- 4 hours
- 2 hours
- 3.5 hours
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