The distance between A and B is 1075 km. A slow train travels 90 km per hour from A to B; an express train departs from B and travels 35 km more per hour than the slow train. Two cars drive towards each other at the same time, how long does it take to meet after departure? (solution by equation)
甲、乙两地相距1075km，一辆慢车从甲车开往乙车，每小时行90km；一辆快车从乙地出发，每小时比慢车多行35km．两车同时开出相向而行，出发后多长时间相遇？(用方程解)
<gadget id="calculator">90 + 35 + 90</gadget>
<output>215</output>

<gadget id="calculator">1_075 / 215</gadget>
<output>5</output>

<result>5</result>