A train of passenger trains and a train of freight trains travel at the same time, at the same place, and in opposite directions. The passenger car is 24 km faster than the truck per hour. After 5 hours, the distance between the two cars is 720 km. How many kilometers per hour does the truck travel? (Solution of column equation)
一列客车和一列货车同时、同地、反向而行．客车每小时比货车快24km，5小时后，两车相距720km，求货车每小时行多少千米？(列方程解)
<gadget id="calculator">24 * 5</gadget>
<output>120</output>

<gadget id="calculator">720 - 120</gadget>
<output>600</output>

<gadget id="calculator">5 + 5</gadget>
<output>10</output>

<gadget id="calculator">600 / 10</gadget>
<output>60</output>

<result>60</result>