passenger car and a truck drive towards each other from places A and B which are 550 kilometers apart at the same time. After 2.5 hours, the distance between the two cars is 200 kilometers. (No encounter) It is known that the truck travels 60 kilometers per hour. How many kilometers per hour does the passenger car travel? (column solution)
客车和货车同时从相距550千米的甲乙两地相对开去，经过2.5小时两车相距200千米，(未相遇)已知货车每小时行60千米，客车每小时行多少千米？(列式程解)
<gadget id="calculator">60 * 2.5</gadget>
<output>150</output>

<gadget id="calculator">550 - 150 - 200</gadget>
<output>200</output>

<gadget id="calculator">200 / 2.5</gadget>
<output>80</output>

<result>80</result>