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。