2007 AMC 8 Problem 17
Attempt Problem 17 of the 2007 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 2007 AMC 8 solutions, or check the answer key.
All problems are used with official legal permission of the Mathematical Association of America (MAA).
17.
A mixture of liters of paint is red tint, yellow tint and water. Five liters of yellow tint are added to the original mixture. What is the percent of yellow tint in the new mixture?
Answer: C
Small hint:
Find the original number of liters of yellow tint.
Big hint:
After adding yellow tint, both the yellow amount and the total mixture amount change.
Solution:
The amount of yellow tint in the original mixture is liters. Adding liters results in a total of liters of yellow tint.
The new mixture has a total of liters, so the percent of yellow tint is
Thus, C is the correct answer.
Problem 17 in other years
- 1985 AMC 8
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