Question

The reciprocal ratio of $\frac{1}{a}:\frac{1}{b}$ is

• A. $\frac{1}{a}:\frac{1}{b}$
• B. $\frac{1}{b}:\frac{1}{a}$
• C. $a:b$
• D. $b:a$

Answer 1

The correct option is B $\frac{1}{b}:\frac{1}{a}$

Note that the reciprocal ratio of $a:b$ is $b:a$.
$⟹$ The reciprocal ratio of $\frac{1}{a}:\frac{1}{b}$ is $\frac{1}{b}:\frac{1}{a}$