In a cross-country race, A and B ran the whole distance, and A took 46 minutes. If B’s speed is twice that of A, how many minutes did B take?
在一次越野赛跑中，甲、乙两人跑完了全程，甲用了46分钟，如果乙的速度是甲的2倍，那么乙用了多少分钟？
<gadget id="calculator">46 / 2</gadget>
<output>23</output>

<result>23</result>