Cars A and B leave from cities A and B at the same time. Car A travels an average of 72.5 kilometers per hour, and car B travels an average of 67.5 kilometers per hour. After 2.5 hours, the two cars meet on the way. How many kilometers are there between A and B?
甲、乙两车从A、B两城同时相对开出，甲车平均每小时行驶72.5千米，乙车平均每小时行驶67.5千米，经过2.5小时两车在途中相遇．A、B两城相距多少千米？
<gadget id="calculator">72.5 + 67.5</gadget>
<output>140</output>

<gadget id="calculator">140 * 2.5</gadget>
<output>350</output>

<result>350</result>