Mom bought 3 kilograms of apples and 5 kilograms of oranges for a total of 24.5 yuan. It is known that apples are 2.5 yuan per kilogram, so how much are oranges per kilogram? (Solutions to the equations.)
妈妈买3千克苹果和5千克橘子共花24.5元，已知苹果每千克2.5元，那么橘子每千克多少元？(列方程解答．)
<gadget id="calculator">2.5 * 3</gadget>
<output>7.5</output>

<gadget id="calculator">24.5 - 7.5</gadget>
<output>17</output>

<gadget id="calculator">17 / 5</gadget>
<output>17/5 = around 3.4</output>

<result>17/5 = around 3.4</result>