Cars A and B depart opposite from stations A and B at the same time, and meet after 3.5 hours. When they met, car B traveled 70 kilometers longer than car A. It is known that the distance traveled by car B per hour is 1.5 times that of car A. How many kilometers per hour does the car travel?
甲、乙两车同时从A、B两站相对开出，经过3.5小时相遇．相遇时，乙车比甲车多行70千米．已知乙车每小时行的路程是甲车的1.5倍．甲车每小时行多少千米？
<gadget id="calculator">1.5 * 3.5</gadget>
<output>5.25</output>

<gadget id="calculator">5.25 - 3.5</gadget>
<output>1.75</output>

<gadget id="calculator">70 / 1.75</gadget>
<output>40</output>

<result>40</result>