Stations A and B are 240 kilometers apart. A bus departs from station A and travels 48 kilometers per hour. A car departs from station B and travels 72 kilometers per hour. One hour after the car leaves station B, the bus leaves station A. The two cars drive towards each other. How many hours later do the two cars meet?
A、B两个车站相距240千米，一公共汽车从A站开出，每小时行驶48千米，一小轿车从B站开出，每小时行驶72千米．小轿车从B站开出1小时后，客车从A站开出，两车相向而行，几小时后两车相遇？
<gadget id="calculator">240 - 72</gadget>
<output>168</output>

<gadget id="calculator">48 + 72</gadget>
<output>120</output>

<gadget id="calculator">168 / 120</gadget>
<output>7/5 = around 1.4</output>

<result>7/5 = around 1.4</result>