A passenger car and a truck depart from places A and B, which are 400 kilometers apart, at the same time. They run towards each other and meet after 5:00. How many kilometers does the bus travel per hour.
一辆客车与一辆货车同时从相距400千米的甲、乙两地开出，相向而行，5时后相遇，火车每小时行35千米．客车每时行多少千米．
<gadget id="calculator">400 / 5</gadget>
<output>80</output>

<gadget id="calculator">80 - 35</gadget>
<output>45</output>

<result>45</result>