standard_description: Compute unit rates associated with ratios of fractions, including ratios of lengths, areas and other quantities measured in like or different units. For example, if a person walks 1/2 mile in each 1/4 hour, compute the unit rate as the complex fraction 1/2/1/4 miles per hour, equivalently 2 miles per hour.
problem_activity: Task
Rubi was paid \$24 to sweep 4 walks. Which of the following can be represented by an equivalent ratio? Explain your thinking.
\$6 to sweep 1 walk
\$12 to sweep 3 walks
\$30 to sweep 5 walks
Anthea hiked 6 miles in 2 hours. Which of the following can be represented by an equivalent ratio? Explain your thinking.
4 miles in 1 hour
12 miles in 4 hours
9 miles in 3 hours


aligns: no