2003 AMC 12A Problem 4
Attempt Problem 4 of the 2003 AMC 12A 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 2003 AMC 12A solutions, or check the answer key.
All problems are used with official legal permission of the Mathematical Association of America (MAA).
4.
It takes Mary minutes to walk uphill km from her home to school, but it takes her only minutes to walk from school to home along the same route. What is her average speed, in km/hr, for the round trip?
Answer: A
Small hint:
Average speed is total distance divided by total time
Big hint:
The total time is minutes hour
Solution:
Mary walks a total of km in minutes, which is hour.
Her average speed is km/hr.
Thus, the correct answer is A.
Problem 4 in other years
- 1950 AMC 12
- 1951 AMC 12
- 1952 AMC 12
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