数学题：苹果和梨的单价比是6:5，妈妈买的苹果和梨的重量比是2:3，共用去18元，妈妈买苹果和梨各用去多少钱？（提问的同学：破灭－资优网）

数学题解答：此题可用按比例分配来解，不过首先需要求出苹果和梨总价的比。

依据就是数量关系式：单价×数量＝总价

苹果和梨总价的比是：(6×2):(5×3)=12:15=4:5

苹果的总价：18÷(4+5)×4=8（元）

梨的总价：18÷(4+5)×5=10（元）

答：妈妈分别买了8元的苹果和10元的梨。

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