A rides a bicycle and B walks towards each other from places A and B which are 15 kilometers apart at the same time. After meeting, A takes 40 minutes to reach point B, but B takes 1.5 hours to reach point A. The speed of A How many meters per minute.
甲骑自行车，乙步行，分别同时从相距15千米的A、B两地相向而行，相遇后，甲又经过40分钟到达B地，乙却用1.5小时才到达A地，则甲的速度是每分钟多少米．
<gadget id="calculator">15 * 1_000</gadget>
<output>15_000</output>

<gadget id="calculator">60 + 40</gadget>
<output>100</output>

<gadget id="calculator">15_000 / 100</gadget>
<output>150</output>

<result>150</result>