8) 2 1/4 : 3/5

\(2\frac{1}{4}=\frac{9}{4}\).

\(\frac{9}{4}:\frac{3}{5}=\frac{9}{4}\cdot\frac{5}{3}=\frac{15}{4}=3\frac{3}{4}\).

Ответ: 3 3/4.