The length of the railway between A and B is 460 km. A passenger train travels from station A to station B, while a freight train travels from station B to station A. After 4 hours, the two trains meet. The truck travels 55 kilometers per hour, how many kilometers per hour does the passenger car travel? (Solution of column equation)
A、B两地之间的铁路长460千米．一列客车从A站开往B站，同时一列货车从B站开往A站，经过4小时两列火车相遇．货车每小时行55千米，客车每小时行多少千米？(列方程解)
<gadget id="calculator">55 * 4</gadget>
<output>220</output>

<gadget id="calculator">460 - 220</gadget>
<output>240</output>

<gadget id="calculator">240 / 4</gadget>
<output>60</output>

<result>60</result>