The naughty mother bought back 8 kilograms of pears and 4 kilograms of apples, and paid a total of 45.2 yuan, of which 10 yuan was spent on buying apples. How much is an average of one kilogram of pears?
淘气的妈妈买回8千克的梨子，4千克的苹果，共付款45.2元，其中买苹果用了10元钱，平均每千克梨子多少元？
<gadget id="calculator">45.2 - 10</gadget>
<output>35.2</output>

<gadget id="calculator">35.2 / 8</gadget>
<output>4.4</output>

<result>4.4</result>