AMC 8 2014 Problem 10
AMC8 2014 年第 10 题
表达式与运算★★☆☆☆
The first AMC 8 was given in 1985 and it has been given annually since that time. Samantha turned 12 years old the year that she took the seventh AMC 8 . In what year was Samantha born?
第一次 AMC8 考试在 1985 年举行，那年之后的每一年都举办一次。Samantha 参加第 7 次 AMC8 考试的那一年，她 12 岁，那么 Samantha 是哪年出生的？
- A.1979
- B.1980
- C.1981
- D.1982
- E.1983
正确答案 · Correct Answer
A
解析 · Solution
Solution 1
The seventh AMC 8 would have been given in 1991. If Samantha was 12 then, that means she was born 12 years ago, so she was born in 1991-12=1979. Our answer is corrections made by DrDominic
Since she was 12 when she took the seventh AMC 8, she should be 12-6=6 years old when the first AMC 8 occurred. Therefore, she was born (was 'age 0') in 1985-6=1979, which is .
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