Answer
$\frac{2}{3}$
Work Step by Step
1. Write as multiplication equation:
$\frac{5}{4} \div \frac{15}{8}$ = $\frac{5}{4} * \frac{8}{15}$
2. Simplify common factors:
$\frac{1}{1} * \frac{2}{3}$
3. Multiply numerator and denominator of fractions:
$\frac{2}{3}$