Two cars start from two places 450 km apart at the same time. Car A travels 84.5 km per hour. After 3 hours, the two cars meet. How many kilometers per hour does car B travel?
两汽车从相距450km的两地同时相对开出，甲车每小时行84.5km，经过3小时两车相遇，乙车每小时行多少千米？
<gadget id="calculator">450 / 3</gadget>
<output>150</output>

<gadget id="calculator">150 - 84.5</gadget>
<output>65.5</output>

<result>65.5</result>