The distance between the two places is 480 kilometers. Two cars, A and B, start from the two places at the same time, drive towards each other, and meet each other after 3 hours. The speed ratio of the two cars is 9:7. How many kilometers does A drive per hour?
两地相距480千米，甲、乙两辆汽车同时从两地出发，相向而行，3小时后相遇，甲、乙两车的速度比是9：7，甲车每小时行多少千米？
<gadget id="calculator">480 / 3</gadget>
<output>160</output>

<gadget id="calculator">9 + 7</gadget>
<output>16</output>

<gadget id="calculator">9 / 16</gadget>
<output>9/16 = around 0.5625</output>

<gadget id="calculator">160 * (9/16)</gadget>
<output>90</output>

<result>90</result>