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1. |
Pipe A fills a tank at 50 m3/hour. Pipe B takes 4 hours to fill the tank. When opened together, they fill the tank in 2 hours. What is the volume of the tank? |
A. | 150 m3 |
B. | 100 m3 |
C. | 225 m3 |
D. | 200 m3 |
Answer» E. | |