The minibus travels 60 kilometers per hour. The two cars depart from the same garage. It is known that the minibus leaves first. After 30 minutes, the car leaves along the route of the minibus. After 2 hours, the minibus catches up with the minibus. Bus, what is the speed of the car?
中巴车每小时行60千米，两车由同一车库出发，已知中巴车先开出，30分钟后小轿车顺着中巴车的线路开出，小轿车经过2小时时间追上中巴车，问小轿车的速度是多少？
<gadget id="calculator">60 * 2</gadget>
<output>120</output>

<gadget id="calculator">60 * 0.5</gadget>
<output>30</output>

<gadget id="calculator">120 + 30</gadget>
<output>150</output>

<gadget id="calculator">150 / 2</gadget>
<output>75</output>

<result>75</result>