The distance from Beijing to Tianjin is 150 kilometers. Two cars depart from the two places at the same time. Car A travels an average of 40 kilometers per hour, and car B travels an average of 60 kilometers per hour. When they meet, how many kilometers does car A travel? ?
北京到天津的距离是150千米，两辆车同时从两地出发，A车平均每小时行驶40千米，B车平均每小时行驶60千米，当相遇时，A车行了多少千米？
<gadget id="calculator">40 + 60</gadget>
<output>100</output>

<gadget id="calculator">150 / 100</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) * 40</gadget>
<output>60</output>

<result>60</result>