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例1樱桃小学最近要修一段围墙,由李师傅和王师傅分工合作。王师傅上午工作3小时,接着李师傅下午工作2小时刚好能完成。已知王师傅和李师傅的工作效率之比是2:1,那么这段围墙由王师傅一个人修完需要几小时?解析只需要把李师傅2小时的工作量转换为王师傅的就行了。
Example 1 Cherry Primary School recently to repair a wall, Master Li and Master division division of labor. Wang master work 3 hours in the morning, followed by Master Li 2 hours in the afternoon just to be completed. It is known that the ratio of working efficiency between Master Wang and Master Li is 2: 1, so how long does it take for the whole wall to be completed by Master Wang? It only needs to convert Master Li’s work for 2 hours into Master Wang’s .