The distance between A and B is 340 kilometers. Two passenger and cargo cars drive from the two places at the same time. The two cars meet after 4 hours. It is known that the speed ratio of the passenger car and the truck is 8:9, how many kilometers does the passenger car travel per hour?
甲乙两地相距340千米，客货两辆汽车同时从两地相对开出，4小时后两车相遇．已知客车和货车的速度比是8：9，客车每小时行多少千米？
<gadget id="calculator">340 / 4</gadget>
<output>85</output>

<gadget id="calculator">8 + 9</gadget>
<output>17</output>

<gadget id="calculator">8 / 17</gadget>
<output>8/17 = around 0.470588</output>

<gadget id="calculator">85 * (8/17)</gadget>
<output>40</output>

<result>40</result>