During the "May 1st" holiday, Uncle Zhang and Uncle Li drove together from Foshan to Shenzhen Happy Valley. Uncle Li's off-road vehicle has a speed of 100 km/h and takes 1.5 hours to reach Happy Valley, while Uncle Zhang's car takes 2.5 hours to arrive. How many kilometers does Uncle Zhang's car travel per hour? (Solve with ratio)
"五一"假期，张叔叔和李叔叔两家人一起自驾车从佛山到深圳欢乐谷旅游．李叔叔的越野车的速度是100千米/时，1.5小时到达欢乐谷，而张叔叔的小轿车用了2.5小时才到达．张叔叔的小轿车每小时行多少千米？(用比例解)
<gadget id="calculator">100 * 1.5</gadget>
<output>150</output>

<gadget id="calculator">150 / 2.5</gadget>
<output>60</output>

<result>60</result>