16) 3 1/3 : 3 3/4

\(3\frac{1}{3}=\frac{10}{3}\), \(3\frac{3}{4}=\frac{15}{4}\).

\(\frac{10}{3}:\frac{15}{4}=\frac{10}{3}\cdot\frac{4}{15}=\frac{8}{9}\).

Ответ: 8/9.