Question

甲乙商品成本共300元,甲按25%定价,乙按10%定价,后各按定价的九五折售,获利30.6元,问甲的成本是多少?

Answer 1

解法一：

x + y = 300

(1.25x + 1.1y)*0.95 = 300+30.6

得x=120 y=180

解法二：

[1.25x + 1.1(300-x)]*0.95 = 300+30.6

得x=120