首先谢lz分享! 你的第一题想讨论下:
peasants mix 1.5pound cashew nuts and 6 pound brazil nuts. the resulting snacked is sold at 1.5 dollar per 0.25 pounds. to the peasants, only brazil nuts are counted as cost. The profit is 50% of the cost. Ask the cost is how much per pound. 这个好像和鸡鸡里面的不一样的饿。 只有brazil nuts 的成本计算在内,就是cashew nuts 成本不计算在内的么 设成本价x (1.5+6)x*150%=1.5*4 x=4 是这样么?晕,变异啦。 -- by 会员 sunyan730 (2010/1/25 15:41:06)
这题我算出来是3。75,大家得多少啊? -- by 会员 20082010 (2010/1/25 21:31:43)
我是这样子做的 ,两种nut加起来一共是7.5pound,按1.5 dollar per 0.25 pounds来算的话就是要卖45刀,45就是利润和cost的和。然后设cost为x哈,6x+50%*6x=45 解得x=5刀/pound~~ 同志们来讨论哈嘛~~ |