Mom bought 4.5 kilograms of apples and 4 kilograms of bananas for a total of 36.5 yuan. Apples are 5 yuan per kilogram, and how much are bananas per kilogram? (solution by equation)
妈妈买4.5千克苹果和4千克香蕉一共花了36.5元钱，苹果每千克5元，香蕉每千克多少钱？(用方程解)
<gadget id="calculator">5 * 4.5</gadget>
<output>22.5</output>

<gadget id="calculator">36.5 - 22.5</gadget>
<output>14</output>

<gadget id="calculator">14 / 4</gadget>
<output>7/2 = around 3.5</output>

<result>7/2 = around 3.5</result>