选择题
2017 AMC 8 Problem 23: Four Days of Travel
Each day for four days, Linda traveled for one hour at a speed that resulted in her traveling one mile in an integer number of minutes. Each day after the first, her speed decreased so that the number of minutes to travel one mile increased by 5 minutes over the preceding day. Each of the four days, her distance traveled was also an integer number of miles. What was the total number of miles for the four trips?
2017年AMC 8 第23题 ：四天的旅行
每天四天，琳达以整数分钟的速度行驶一英里。第一天之后的每一天，她的速度都会下降，一英里的行驶时间比前一天增加了5分钟。四天的每一天，她所走的路程也是一个整数英里。这四次行程的总里程数是多少？
A.
10
B.
15
C.
25
D.
50
E.
82