First. Two cars, B, depart from two places 480 kilometers apart at the same time, and meet each other after 3 hours. The ratio of the speed of the two cars is 5:3, how many kilometers does the second car travel per hour?
甲．乙两车分别从相距480千米的两地同时相对开出，3小时后相遇，甲．乙两车的速度之比是5：3，乙车每小时行多少千米？
<gadget id="calculator">480 / 3</gadget>
<output>160</output>

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

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">160 * (3/8)</gadget>
<output>60</output>

<result>60</result>