问题标题：
一道头晕的SAT1数学题~Agrocerycustomerspentatotalof$9.06forgroundbeefandcoffee.Thecoffeecost2timesasmuchperpoundasthegroundbeef,andthecustomerbought3timesasmanypoundsofgroundbeefaspoundsofcoffee.Howmuch,
问题描述：
一道头晕的SAT1数学题~
Agrocerycustomerspentatotalof$9.06forgroundbeefandcoffee.Thecoffeecost2timesasmuchperpoundasthegroundbeef,andthecustomerbought3timesasmanypoundsofgroundbeefaspoundsofcoffee.Howmuch,indollars,didthecustomerspendoncoffee?
不麻烦高手们帮我翻译了,题目我想我应该看懂了.问题是题目并没有告诉我那个customer究竟买了几pound的coffee或者是beef啊,那若是这样的话能解得出来么?
谷科回答：
能做出来你设牛肉的价格为x,咖啡的价格不就是2x吗你再设咖啡的重量为y,则牛肉的重量是3y.2xy+3xy=9.06（价格X重量=总钱数）可以解出来xy=1.812而咖啡一共买了y,单价是2x,一共是2xy.不就是2乘以1.812=3.624$吗你注...
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