Answer
$a = 30$ m
$b = 60$ m
Work Step by Step
1. Solve for $a$
$\frac{a}{10} = \frac{75}{25}$
$a = \frac{10 \times 75}{25}$
$a = \frac{750}{25}$
$a = 30$ m
2. Solve for $b$
$\frac{b}{20} = \frac{75}{25}$
$b = \frac{20 \times 75}{25}$
$b = \frac{1500}{25}$
$b = 60$ m