Xiaodong's mother bought 4 kilograms of bananas and 5 kilograms of apples at the fruit shop, and the total cost was 98 yuan. It is known that the price of bananas per kilogram is 8.5 yuan, how much is the price of apples per kilogram?
小东的妈妈在水果店买了4千克香蕉和5千克苹果，一共用去98元．已知每千克香蕉售价8.5元，每千克苹果多少元？
<gadget id="calculator">8.5 * 4</gadget>
<output>34</output>

<gadget id="calculator">98 - 34</gadget>
<output>64</output>

<gadget id="calculator">64 / 5</gadget>
<output>64/5 = around 12.8</output>

<result>64/5 = around 12.8</result>