A passenger train and a freight train depart from two places 450 kilometers apart at the same time and meet each other in 4.5 hours. It is known that the speed ratio of the passenger car to the truck is 3:2, how many kilometers per hour does the passenger car travel?
一列客车和一列货车同时从相距450千米的两地相对开出，4.5小时相遇．已知客车与货车的速度比是3：2，客车每小时行多少千米？
<gadget id="calculator">450 / 4.5</gadget>
<output>100</output>

<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">100 * (3/5)</gadget>
<output>60</output>

<result>60</result>