The two cars leave at the midpoint between A and B at the same time in opposite directions, and the bus arrives at A in 3 hours. The truck is 60 kilometers away from city B, and the speed ratio of the bus to the truck is 3:2. Find the distance between cities A and B.
两车同时在甲、乙两城之间中点向相反方向开出，3小时后客车到达甲城．货车离乙城还有60千米，客车与货车的速度比是3﹕2，求甲、乙两城之间的距离．
<gadget id="calculator">3 - 2</gadget>
<output>1</output>

<gadget id="calculator">3 + 3</gadget>
<output>6</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">60 / (1/6)</gadget>
<output>360</output>

<result>360</result>