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Machines G and H cut sheets of plastic into pieces that are used in car manufacturing. Working alone at its constant rate, machine G cuts 10 sheets of plastic in 8 minutes. Working alone at its constant rate, machine H cuts 20 sheets of plastic in 24 minutes. How many minutes does it take machines G and H, working simultaneously at their respective constant rates, to cut a total of 30 sheets of plastic?
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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。
