The distance between the two places is 210 kilometers. Two cars, A and B, drive towards each other from the two places at the same time. They meet each other in 3.5 hours. Car A travels 28 kilometers per hour. How many kilometers does car B travel per hour?
两地间的路程是210千米，甲、乙两辆汽车同时从两地相向开出，3.5小时相遇，甲车每小时行28千米．乙车每小时行多少千米？
<gadget id="calculator">210 / 3.5</gadget>
<output>60</output>

<gadget id="calculator">60 - 28</gadget>
<output>32</output>

<result>32</result>