Question

Find $n=?$
$\frac{(15-n)}{(12-n)}=5$

Answer 1

We have,

$\frac{(15-n)}{(12-n)}=5$

$15-n=5(12-n)$

$15-n=60-5n$

$5n-n=60-15$

$4n=45$

$n=\frac{45}{4}$

Hence, this is the answer.