Question

Find the equivalent ratio of $1:3.$

• A. $5:15$
• B. $2:8$
• C. $3:1$
• D. $20:50$

Answer 1

The correct option is A $5:15$

The given ratio is $1:3$.

This can be written as $\frac{1}{3}$.

The equivalent ratios can be $\frac{1\times 2}{3\times 2}$, $\frac{1\times 3}{3\times 3}$, $\frac{1\times 4}{3\times 4}$, $\frac{1\times 5}{3\times 5}$.

$=\frac{2}{6}$, $\frac{3}{9}$, $\frac{4}{12}$, $\frac{5}{15}$

Hence, from the given options, $5:15$ is the correct answer.