The distance between the two cities is 480 kilometers. Two cars, A and B, drive from the two cities at the same time. After 3 hours, the two cars meet. It is known that car A travels 85 kilometers per hour, and how many kilometers per hour does car B travel.
两城相距480千米，甲乙两辆汽车同时从两城相对开出，3小时后两车相遇，已知甲车每小时行85千米，乙车每小时行多少千米．
<gadget id="calculator">480 / 3</gadget>
<output>160</output>

<gadget id="calculator">160 - 85</gadget>
<output>75</output>

<result>75</result>