Mom bought 3 kilograms of oranges and 4 kilograms of apples, and shared them for 27.6 yuan. It is known that the price of oranges per kilogram is 3.2 yuan, how much is the price of apples per kilogram? (column equation solution)
妈妈买了3千克桔子和4千克苹果，共用去27.6元．已知每千克桔子的售价是3.2元，每千克苹果的售价是多少元？(列方程解答)
<gadget id="calculator">3.2 * 3</gadget>
<output>9.6</output>

<gadget id="calculator">27.6 - 9.6</gadget>
<output>18</output>

<gadget id="calculator">18 / 4</gadget>
<output>9/2 = around 4.5</output>

<result>9/2 = around 4.5</result>