1. To find a ratio equivalent to $3:8$, you can multiply both quantities by 5. What is the resulting equivalent ratio? ___
2. Which of the following ratios is equivalent to the ratio $6:4$?
3. Using the method of repeated addition, a sequence of equivalent ratios starting with $5:7$ would be $5:7, 10:14, \ldots$. What is the next ratio in this sequence? ___
4. Which method correctly describes how to generate an equivalent ratio for $a:b$, where $c$ is any non-zero number?
5. The ratio $20:25$ is equivalent to a simpler ratio. By dividing both quantities by 5, what is the simplified equivalent ratio? ___
6. The ratio of red marbles to blue marbles is $5:4$. This relationship is represented by ordered pairs $(r, b)$, where $r$ is red and $b$ is blue. If there are 15 red marbles, the ordered pair is $(15, \_\_\_)$.
7. A cleaning solution is made by mixing 3 parts vinegar with 4 parts water. If $(v, w)$ represents an ordered pair of vinegar to water, which pair does NOT belong to this set of equivalent ratios?
8. A school policy requires a ratio of 4 students for every 1 adult chaperone on a field trip. If an ordered pair is written as $(c, s)$, where $c$ is chaperones and $s$ is students, the first pair in a ratio table would be $(1, \_\_\_)$.
9. The ratio of cats to dogs at a shelter is $2:5$. If an ordered pair is written in the form $(d, c)$, where $d$ is the number of dogs and $c$ is the number of cats, which of the following ordered pairs is correct?
10. To make a specific shade of orange paint, the ratio of yellow paint to red paint is $5:3$. If a painter uses 25 liters of yellow paint, the ordered pair $(yellow, red)$ for this mixture is $(25, \_\_\_)$.