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Each of two pumps delivers water into a tank at a constant rate of 30 liters per minute, and a third pump removes water from the tank at a constant rate of 15 liters per minute. If the three pumps start working simultaneously when the tank is filled to half of its capacity and continue working until the tank is full, it will take 12 minutes to fill the tank. What is the capacity, in liters, of the tank?
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· 相关考点
2.5.2 工作效率题
2.5.2 工作效率题
以上解析由 考满分老师提供。
