1985 AMC 8 Problem 21
Attempt Problem 21 of the 1985 AMC 8 below, then check your answer against the professionally curated solution from LIVE by Po-Shen Loh. You can also try the full timed exam, view all 1985 AMC 8 solutions, or check the answer key.
All problems are used with official legal permission of the Mathematical Association of America (MAA).
21.
Mr. Green receives a raise every year. His salary after four such raises has gone up by what percent?
less than
more than
Answer: E
Small hint:
Applying a raise multiplies the salary by
Big hint:
After four raises the salary is multiplied by compare that to
Solution:
After four raises the salary is multiplied by
That is an increase of which is more than
Thus, the correct answer is E .
Problem 21 in other years
- 1986 AMC 8
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