The distance between A and B is 480 kilometers. A truck travels from A to B at a speed of 65 kilometers per hour. After 4 hours, the two vehicles meet. How many kilometers per hour does the bus travel? (column equations to solve problems)
甲乙两城相距480千米，货车以每小时65千米的速度从甲城开往乙城，4小时后两车相遇，客车每小时行多少千米？(列方程解决问题)
<gadget id="calculator">4 * 65</gadget>
<output>260</output>

<gadget id="calculator">480 - 260</gadget>
<output>220</output>

<gadget id="calculator">220 / 4</gadget>
<output>55</output>

<result>55</result>