Question

Half of a herd of deer are grazing into field and three-fourth of the remaining are playing nearby.The rest $9$ are drinking water from a pond.Find the numbers of deer.

Answer 1

Let numbers of deer $x$
$\frac{x}{2}+\frac{3}{4}\times \frac{x}{2}+9=x$
$x-\frac{x}{2}-\frac{3x}{8}=9$
$\frac{8x-4x-3x}{8}=9$
$x=72$