Question

The reciprocal ratio of $\frac{a}{2}$ : $\frac{b}{3}$ is _______.

• A. 2b : 3a
• B. 3a : 2b
• C. 3b : 2a
• D. 2a : 3b

Answer 1

The correct option is A 2b : 3a

Reciprocal ratio of
$\frac{a}{2}$ : $\frac{b}{3}$ =
$\frac{1}{\frac{a}{2}}$ : $\frac{1}{\frac{b}{3}}$
= $\frac{2}{a}$ : $\frac{3}{b}$
= 2b : 3a