The distance between A and B is 480 kilometers. Car A starts from A at a speed of 60 kilometers per hour. At the same time, car B starts from B at a speed of 80 kilometers per hour. Car B arrives at the terminal earlier than A. how many hours.
甲、乙两地相距480千米，甲车以每小时60千米的速度从甲地出发，同时乙车以每小时80千米的速度从乙地出发，乙车比甲车早到终点站多少小时．
<gadget id="calculator">480 / 60</gadget>
<output>8</output>

<gadget id="calculator">480 / 80</gadget>
<output>6</output>

<gadget id="calculator">8 - 6</gadget>
<output>2</output>

<result>2</result>