The distance between A and B is 482 kilometers. The bus and the truck drive towards each other from A and B respectively. After driving for 4.5 hours, the distance between the two cars is still 50 kilometers. The bus travels 53 kilometers per hour. How much does the truck travel per hour? km?
A、B两地相距482千米，客车和货车分别从A、B两地相向而行，行驶4.5小时后，两车还相距50千米，客车每小时行驶53千米，货车每小时行驶多少千米？
<gadget id="calculator">482 - 50</gadget>
<output>432</output>

<gadget id="calculator">432 / 4.5</gadget>
<output>96</output>

<gadget id="calculator">96 - 53</gadget>
<output>43</output>

<result>43</result>