Cars A and B drive from two stations 315 kilometers apart. After 3 hours and 30 minutes, the two cars meet at a distance of 17.5 kilometers from the midpoint of the two stations. It is known that car A is faster than car B, how much faster is car A than car B?
甲、乙两车间时从相距315千米的两个车站对开，3小时30分后，两车在距离两站中点处17.5千米的地方相遇．已知甲车比乙车的速度快，甲车比乙车的速度快多少？
<gadget id="calculator">2 / 3.5</gadget>
<output>0.571429</output>

<gadget id="calculator">17.5 * 0.571429</gadget>
<output>10.000007</output>

<result>10.000007</result>