2011 AMC 8 Problem 9
Attempt Problem 9 of the 2011 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 2011 AMC 8 solutions, or check the answer key.
All problems are used with official legal permission of the Mathematical Association of America (MAA).
9.
Carmen takes a long bike ride on a hilly highway. The graph indicates the miles traveled during the time of her ride. What is Carmen’s average speed for her entire ride in miles per hour?
Answer: E
Small hint:
Read the final distance and total hours from the graph.
Big hint:
Average speed is total distance divided by total time.
Solution:
Carmen travels miles in hours, so her average speed is miles per hour.
Thus, E is the correct answer.
Problem 9 in other years
- 1985 AMC 8
- 1986 AMC 8
- 1987 AMC 8
- 1988 AMC 8
- 1989 AMC 8
- 1990 AMC 8
- 1991 AMC 8
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