AMC12 2009 A

AMC12 2009 A · Q1

AMC12 2009 A · Q1. It mainly tests Arithmetic misc.

Kim's flight took off from Newark at 10:34 AM and landed in Miami at 1:18 PM. Both cities are in the same time zone. If her flight took $h$ hours and $m$ minutes, with $0 < m < 60$, what is $h + m$?

Kim 的航班于上午 10:34 从 Newark 起飞，并于下午 1:18 降落在 Miami。两个城市在同一时区。如果她的航班飞行了 $h$ 小时 $m$ 分钟，且 $0 < m < 60$，那么 $h + m$ 是多少？

(A) 46 46

(B) 47 47

(D) 53 53

(E) 54 54

Answer

Correct choice: (A)

正确答案：（A）

Solution

There is $1$ hour and $60-34 = 26$ minutes between 10:34 AM and noon; and there is $1$ hour and $18$ minutes between noon and 1:18 PM. Hence the flight took $2$ hours and $26 + 18 = 44$ minutes,and 2+44=46s0 $h+m= 46\ \textbf{(A)}$.

从上午 10:34 到中午有 $1$ 小时和 $60-34 = 26$ 分钟；从中午到下午 1:18 有 $1$ 小时和 $18$ 分钟。因此航班飞行了 $2$ 小时和 $26 + 18 = 44$ 分钟，所以 $h+m=2+44=46\ \textbf{(A)}$。

Topics

AR.015 Arithmetic misc