Two cars, A and B, start from A and B at the same time respectively, and travel back and forth between A and B continuously. Car A travels 20 kilometers per hour, and car B travels 50 kilometers per hour. It is known that the distance between the 10th and 18th head-on encounters of the two vehicles is 60 kilometers. Question: How many miles is the distance between A and B?
甲、乙两车分别从A、B两地同时出发，在A、B两地间不断地往返行驶．甲车每小时行20千米，乙车每小时行50千米．已知两车第10次与第18次迎面相遇的地点相距60千米．问：A、B间的路程是多少千米？
<result>105</result>