师徒2人加工同一种零件,师傅3小时加工16个,徒弟4小时加工21个,做一个零件各需多长时间?谁做的更快?
30悬赏,有可能还加!!!!!!急急急急急急急急急急急急急急急急急急急急!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!运用通分!!!!!!!!!!!!...
30悬赏,有可能还加!!!!!!急急急急急急急急急急急急急急急急急急急急!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
运用通分!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 展开
运用通分!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 展开
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