Cars A and B leave opposite each other from AB at the same time. Car A travels 60km per hour, and car B travels 10% of the whole journey per hour. The distance between A and B.
甲、乙两车同时从AB两地相对开出，甲车每小时行60km，乙车每小时行驶全程的10%，当乙车行驶到全程的(2/5)时与甲车相遇，求甲乙两地的距离．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(2/5) / (1/10)</gadget>
<output>4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">4 / (3/5)</gadget>
<output>20/3 = around 6.666667</output>

<gadget id="calculator">60 * (20/3)</gadget>
<output>400</output>

<result>400</result>