Two people, A and B, set off from two places 42 kilometers apart at the same time. A's speed is 8 kilometers per hour, and B's speed is 6 kilometers per hour. How many hours after they set off, they meet.
甲、乙二人从相距42千米的两地同时相对出发，甲的速度为每小时8千米，乙的速度为每小时6千米，他们出发后多少小时相遇．
<gadget id="calculator">8 + 6</gadget>
<output>14</output>

<gadget id="calculator">42 / 14</gadget>
<output>3</output>

<result>3</result>