From A to B, car A takes 10 hours and car B takes 15 hours. If two cars, A and B, leave opposite each other at the same time, what fraction of the distance AB traveled when they met?
从A到B地，甲车要行10小时，乙车要行15小时．如果甲、乙两车同时相对开出，相遇时甲车行了AB路程的几分之几？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">(1/10) + (1/15)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 / (1/6)</gadget>
<output>6</output>

<gadget id="calculator">6 * (1/10)</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>