A truck and a bus are traveling towards each other from A and B at the same time. The truck travels 48 kilometers per hour, and the bus travels 42 kilometers per hour. The two vehicles meet at a distance of 30 kilometers from the midpoint. What is the distance in kilometers between A and B? ?
货车和客车同时从甲乙两地相向而行，货车每小时行48千米，客车每小时行42千米，两车在距中点30千米处相遇，求甲乙两地的距离是多少千米？
<gadget id="calculator">48 + 42</gadget>
<output>90</output>

<gadget id="calculator">48 - 42</gadget>
<output>6</output>

<gadget id="calculator">2 / 6</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">30 * (1/3)</gadget>
<output>10</output>

<gadget id="calculator">90 * 10</gadget>
<output>900</output>

<result>900</result>