Two trains departed from two places 525 kilometers apart at the same time, and met after 3 hours. One train travels 90 kilometers per hour, how many kilometers per hour does the other train travel?
两列火车同时从相距525千米的两地相对开出，3小时后相遇．一列火车每小时行驶90千米，另一列火车每小时行使多少千米？
<gadget id="calculator">525 / 3</gadget>
<output>175</output>

<gadget id="calculator">175 - 90</gadget>
<output>85</output>

<result>85</result>