Aunt Wang bought some apples and bananas and spent the same amount of money. It is known that apples are 6 yuan per kilogram and bananas are 4 yuan per kilogram. What is the average unit price of these fruits per kilogram?
王阿姨买来一些苹果和香蕉，花去了同样多的钱，已知苹果每千克6元，香蕉每千克4元，那么这些水果平均每千克的单价是多少元．
<gadget id="calculator">1 * 2</gadget>
<output>2</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/6) + (1/4)</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">2 / (5/12)</gadget>
<output>24/5 = around 4.8</output>

<result>24/5 = around 4.8</result>