The bus and the truck are traveling towards each other at the same time. It takes 2 hours for the bus to travel the entire distance, and 3 hours for the truck to travel the entire distance. When the two vehicles meet, the bus travels 30 kilometers longer than the truck. How many kilometers are the distance between the two places.
客车和货车同时从两地相向而行，客车走完全程需要2小时，货车走完全程需要3小时，两车相遇时，客车比货车多行了30千米．两地相距多少千米．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">(1/2) + (1/3)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 / (5/6)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(1/2) - (1/3)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">30 / (6/5) / (1/6)</gadget>
<output>150</output>

<result>150</result>