A passenger car and a truck drive from two places A and B which are 558 kilometers apart at the same time. The bus travels 64 kilometers per hour. After 4.5 hours, the two vehicles meet. How many kilometers per hour does the truck travel? (Solution of column equation)
一辆客车和一辆货车从相距558千米的甲乙两地同时相向开出，客车每小时行驶64千米，经4.5小时两车相遇，货车每小时行驶多少千米？(列方程解)
<gadget id="calculator">64 * 4.5</gadget>
<output>288</output>

<gadget id="calculator">558 - 288</gadget>
<output>270</output>

<gadget id="calculator">270 / 4.5</gadget>
<output>60</output>

<result>60</result>