Two people, A and B, are walking toward each other from two places 24 kilometers apart at the same time, and meet each other after 3 hours. A's speed is 3 kilometers per hour, what is B's speed?
甲、乙二人同时由相距24千米的两地相向而行，3小时后相遇了，甲的速度是每小时行3千米，乙的速度是多少？
<gadget id="calculator">24 / 3</gadget>
<output>8</output>

<gadget id="calculator">8 - 3</gadget>
<output>5</output>

<result>5</result>