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Machine X, working at a constant rate, can perform a job in T hours. Machine Y, working at a different constant rate, can perform the same job in 3T hours. If the two machines work simultaneously at their respective constant rates, how many hours will it take for the machines to perform the job, in terms of T?
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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。
