# Sample quiz on ratios and proportions Main home here.

1. What is a ratio?
a special number that has rational factors
a comparison of two quantities with the same units
addition of two quantities with the same units
addition of two quantities with different units
2. An equation with a ratio on each side is called $\cdots$?
proportion
relation
product
quotient
3. Is it true that a ratio can also be expressed as a fraction?
No; they are two different things
Yes; it is always possible
Yes, but only for even numbers
Not sure to be honest
4. Express the ratio $12:15$ in its simplest form.
$4:15$
$12:5$
$5:4$
$4:5$
5. A class consists of $10$ boys and $14$ girls. What is the ratio of girls to boys?
$14:5$
$5:7$
$7:5$
$14:24$
6. If $2:5=x:15$, then the value of $x$ is $\cdots$?
$6$
$5$
$3$
$2$
7. A bag contains $6$ red balls and $9$ white balls. The ratio of white balls to the total number of balls is $\cdots$?
$6:9$
$9:6$
$6:15$
$3:5$.
8. Express the ratio $14:56$ as a fraction in its lowest terms.
$\frac{1}{4}$
$\frac{4}{1}$
$\frac{1}{3}$
$\frac{1}{5}$
9. In the proportion $x:13=10:52$, the value of $x$ is $\cdots$?
$40$
$20$
$2.5$
$25$
10. In the proportion $12:15=3:y$, the value of $y$ is $\cdots$?
$60$
$48$
$37.5$
$3.75$