A passenger car and a truck drive towards each other from places A and B at the same time. It takes 10 hours for a bus to complete the journey and 15 hours for a truck to complete the journey. After the two cars met on the way, the bus traveled another 90 kilometers. At this time, the bus travels the whole way (4/5), how many kilometers is the distance between A and B?
客车和货车同时从甲、乙两地相向而行．客车行完全程需10小时；货车行完全程需15小时．两车在中途相遇后，客车又行了90千米．这时客车行了全程的(4/5)，甲、乙两地的距离是多少千米？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<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>

<gadget id="calculator">(4/5) - (3/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">90 / (1/5)</gadget>
<output>450</output>

<result>450</result>