Two cities, A and B, are 650 kilometers apart. A passenger car and a freight train depart from the two cities at the same time. After meeting each other for 5 hours, the passenger car travels 70 kilometers per hour. How many kilometers per hour does the truck travel? (solution by equation)
甲乙两城相距650千米，一列客车和一列货车同时从两个城市相对开出，经过5小时相遇，已知客车每小时行70千米，货车每小时行多少千米？(用方程解)
<gadget id="calculator">70 * 5</gadget>
<output>350</output>

<gadget id="calculator">650 - 350</gadget>
<output>300</output>

<gadget id="calculator">300 / 5</gadget>
<output>60</output>

<result>60</result>