Uncle Wang went to visit from City A to City B. It took 1.5 hours to take the EMU train with a speed of 200 km/h. How long will it take to change to a train with a speed of 120 km/h?
王叔叔从甲城到乙城去考察，乘坐速度是200千米/时的动车组列车，需要1.5时．如果改乘速度是120千米/时的列车，需要多少时间？
<gadget id="calculator">1.5 / 120</gadget>
<output>0.0125</output>

<gadget id="calculator">200 * 0.0125</gadget>
<output>2.5</output>

<result>2.5</result>