Hint for process of elimination: In the vast majority of cases, the SAT problem creators are very careful to make solutions realistic. You may recognize 5 km, or 3.1 miles, to be the standard distance for a 5K, a very common race frequently ran or walked for charity or in local or school competition across the United States. A 5K can be run in 15 minutes for the fastest high school runners, or walked at a comfortable pace in less than one hour. Use this to eliminate the two answers that do not make sense.

Read on for a full solution.

Continue reading →

If Sophie can run 0.03 km in 0.12 minutes, in how many minutes can Sophie run 5 km?

1. $latex 0.15 $ (check answer)
2. $latex 20 $ (check answer)
3. $latex 33 \frac{1}{3} $ (check answer)
4. $latex 45 $ (check answer)
5. $latex 360 $ (check answer)

Solutions, hints, and questions are welcomed. A full solution will be posted on November 16th. If you would like to learn how to enter math formulas into this blog, visit the WordPress LaTeX tutorial page.