The distance between A and B is 2400 meters. A and B set off from A and B at the same time and walk toward each other. After they meet somewhere on the way, A continues to travel for 18 minutes to reach B, and B continues on. Traveling for 50 minutes to reach point A, may I ask: How many meters does A walk per minute?
A、B两地相距2400米，甲、乙两人分别从A、B两地同时出发，相向而行，两人在途中某处相遇后，甲又继续行进18分钟到达B地，乙又继续行进50分钟到达A地，请问：甲每分钟多走多少米？
<result>500</result>