2008 AMC 8 Problem 9
Attempt Problem 9 of the 2008 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 2008 AMC 8 solutions, or check the answer key.
All problems are used with official legal permission of the Mathematical Association of America (MAA).
9.
In Tycoon Tammy invested for two years. During the first year her investment suffered a loss, but during the second year the remaining investment showed a gain. Over the two-year period, what was the change in Tammy’s investment?
loss
loss
gain
gain
gain
Answer: D
Small hint:
After a loss, of the original investment remains.
Big hint:
Apply the gain to the reduced amount, not to the original amount.
Solution:
The loss changes the investment from to .
The gain then changes it to .
The investment went from to , which is a gain.
Thus, D is the correct answer.
Problem 9 in other years
- 1985 AMC 8
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