AMC8 1997

AMC8 1997 · Q8

AMC8 1997 · Q8. It mainly tests Averages (mean).

Walter gets up at 6:30 am, catches the school bus at 7:30 am, has 6 classes that last 50 minutes each, has 30 minutes for lunch, and has 2 hours additional time at school. He takes the bus that arrives at 4:00 pm. How many minutes has he spent on the bus?

沃尔特早上 6:30 起床，7:30 坐校车，上午有 6 节课每节 50 分钟，午餐 30 分钟，学校还有 2 小时额外时间。他坐的校车下午 4:00 到家。他总共在校车上花了多少分钟？

(A) 30 30

(B) 60 60

(D) 90 90

(E) 120 120

Answer

Correct choice: (B)

正确答案：（B）

Solution

Total time from 7:30 AM to 4:00 PM is 8.5 hours = 510 minutes. School time: classes 300 min + lunch 30 + 2 hours 120 = 450 min. Bus time: 510 - 450 = 60 min.

从早上 7:30 到下午 4:00 总共 8.5 小时 = 510 分钟。学校时间：上课 300 分钟 + 午餐 30 + 2 小时 120 = 450 分钟。校车时间：510 - 450 = 60 分钟。

Topics

AR.006 Averages (mean)