Concept explainers
A Driving Problem: Driving at 50 mph, you covered the distance between two markers in 75 seconds. How long would it take you to cover that same distance driving at 60 mph?
a. Is the proportion
appropriate for solving the driving problem? Why or why not?
b. Explain how to reason about multiplication and division with quantities to solve the driving problem.
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Mathematics for Elementary Teachers with Activities (5th Edition)
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