A car travels 90 kilometers per hour from place A to place B, and it takes 3 hours to arrive. If it takes 2.5 hours to arrive, how many kilometers does it need to travel per hour? (Solve with ratio)
一辆汽车从甲地开往乙地，每小时行90千米，3小时到达，若要2.5小时到达，每小时需行多少千米？(用比例解)
<gadget id="calculator">90 * 3</gadget>
<output>270</output>

<gadget id="calculator">270 / 2.5</gadget>
<output>108</output>

<result>108</result>