Answer
The total number of households is 125,000,000.
Work Step by Step
$\frac{part}{whole}=\frac{percent}{100}$
$\frac{100,000}{w}=\frac{0.08}{100}$
Cross multiply to solve for w.
$0.08w=(100,000)(100)$
$0.08w\div0.08=10,000,000\div0.08$
$w=125,000,000$