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有一次到朋友小李家做客,小李正在用饼铛子烙饼,看到她很忙,我们又搭不上手,只好一边和她说话,一边看着她烙饼.无意中我们发现了这样一个问题:她家的饼铛子一次只能烙3张饼,每张饼都要烙正反两面(为了叙述方便,我们把一张饼的两面分成正反两面),烙每一面都需要1分钟,也就是说烙好1张饼需要2分钟.小李一共烙4张饼,第一锅烙3张,用了2分钟,而第二锅只烙1张,也用了2分钟.我们在嘲笑她缺乏计划性,第二锅烙1张饼也用2分钟的同时,不禁想到了这样一个问题:能用较短的时间烙出4张饼吗?
One time to a friend Li Li’s guest, Li is using pancake pancake, saw her very busy, we can not get along, had to talk to her while watching her pancake. Inadvertently we found such a problem : Her cake cakes at home can only burn 3 cakes at a time, each cake must be branded both sides (for narrative convenience, we split the two sides of a cake into both sides), branded every side takes 1 minute, That is to say, it takes 2 minutes for a cake to be baked, and Li Li has 4 pieces of cake in total, 3 pieces in the first pot, 2 minutes in the first pot, and 2 minutes in the second pot. Her lack of planning, the second boil a cake also took 2 minutes at the same time, can not help but think of such a question: can be used in a short time branding four cakes?