The fruit store buys a batch of fruit at 2.4 yuan per kilogram and sells it at 3.2 yuan per kilogram. When the whole (1/2) is 10 kilograms more, the cost has been recovered. How many kilograms of fruit does the store buy?
水果店以每千克2.4元进一批水果，以每千克3.2元出售，当卖出全部的(1/2)还多10千克时已经收回了成本，商店进水果多少千克？
<gadget id="calculator">10 * 3.2</gadget>
<output>32</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) * 3.2</gadget>
<output>1.6</output>

<gadget id="calculator">2.4 - 1.6</gadget>
<output>0.8</output>

<gadget id="calculator">32 / 0.8</gadget>
<output>40</output>

<result>40</result>