#### Answer

$\frac{2}{3}$.

#### Work Step by Step

300 people to 450 people
$\frac{300 people}{450 people}$
now as both numerator and denominator has same unit it can be divided out.
$\frac{300}{450}$
Now divide both numerator and denominator by 150.
$\frac{300 ÷ 150}{450 ÷ 150}$
it can be written as a fraction in the lowest term as $\frac{2}{3}$.