Cars A and B drive oppositely from two places at the same time, the distance between the two places is 285 kilometers, and they meet after 5 hours. Car A travels 30 kilometers per hour, how many kilometers per hour does Car B travel?
甲、乙两车同时从两地相对开出，两地相距285千米，5小时后相遇．甲车每小时行30千米，乙车每小时行多少千米？
<gadget id="calculator">285 / 5</gadget>
<output>57</output>

<gadget id="calculator">57 - 30</gadget>
<output>27</output>

<result>27</result>