Stations A and B are 275km apart. The passenger and freight trains depart from A and B at 8:00 am and drive toward each other. They meet at 10:30. The freight train travels 60 km per hour. How many kilometers per hour does the passenger train travel?
甲、乙两站相距275km，客、货两车上午8：00分别从A、B两地同时出发相向而行，10：30相遇，货车每小时行60km，客车每小时行多少千米？
<result>54</result>