A van and a passenger car drive from City A to City B at the same time, the van travels 6 kilometers more than the passenger car per hour, and arrives at City B 40 minutes earlier than the passenger car. When the bus arrives at City B, the van travels another 30 kilometers. How many kilometers is the distance between City A and City B?
一辆面包车和一辆客车同时从甲城往乙城方向行驶，面包车每小时比客车多行6千米，比客车早40分钟到乙城．当客车到乙城时，面包车又往前行了30千米，甲城和乙城相距多少千米．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">30 / (2/3)</gadget>
<output>45</output>

<gadget id="calculator">45 - 6</gadget>
<output>39</output>

<gadget id="calculator">30 / 6</gadget>
<output>5</output>

<gadget id="calculator">39 * 5</gadget>
<output>195</output>

<result>195</result>