A passenger car and a train depart from places A and B opposite each other. The distance between the two cars is 120 kilometers in 3 hours. After another 2 hours, the distance between the two cars is 120 kilometers. The speed ratio of the bus and the train is 5 : 3. How many kilometers does the bus travel per hour?
一列客车和一列火车从甲乙两地相对开出，3小时两车之间还相距120千米，接着又行驶了2小时，两车之间又相距120千米，客车和火车的速度比是5：3，客车每小时行多少千米？
<gadget id="calculator">120 + 120</gadget>
<output>240</output>

<gadget id="calculator">240 / 2</gadget>
<output>120</output>

<gadget id="calculator">5 + 3</gadget>
<output>8</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">120 * (5/8)</gadget>
<output>75</output>

<result>75</result>