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Katie Mae is 3 mph faster on her bike than on foot. Her walking speed is:
A3 mph
B6 mph
C9 mph
D1.5 mph
Answer & Solution
Correct answer: A. 3 mph
1. Distance is the same either way.
2. 0.5r equals 0.25 times r plus 3.
3. So her walking speed is 3 mph.
_Source: OpenStax Elementary Algebra 2e, Chapter 3, Uniform Motion Applications (CC BY 4.0)._
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