Question

If $15\%$ of $A=20\%$ of $B$, then $A:B=?$
(a) $3:4$
(b) $4:3$
(c) $17:16$
(d) $16:17$

Answer 1

Given:

$15\%$ of $A=20\%$ of $B$
$\Rightarrow \frac{15A}{100}=\frac{20B}{100}$

$\Rightarrow 15A=20B$

$\Rightarrow \frac{A}{B}=\frac{20}{15}$

$\Rightarrow \frac{A}{B}=\frac{4}{3}$

$\Rightarrow A:B=4:3$

Hence, Option B is correct.