Two trains, A and B, depart from two places 1200 kilometers apart at the same time. They travel toward each other and meet each other in 8 hours. Train A travels 70 kilometers per hour. How many kilometers per hour does train B travel?
甲、乙两列火车从相距1200千米的两地同时开出，相向而行，8小时相遇，甲车每小时行70千米，乙车每小时行多少千米？
<gadget id="calculator">1_200 / 8</gadget>
<output>150</output>

<gadget id="calculator">150 - 70</gadget>
<output>80</output>

<result>80</result>