1) $$3\frac{2}{5} - 1\frac{11}{15} = 3\frac{6}{15} - 1\frac{11}{15} = 2\frac{21}{15} - 1\frac{11}{15} = 1\frac{10}{15} = 1\frac{2}{3} = \frac{5}{3}$$
2) $$2\frac{2}{5} : \frac{5}{3} = \frac{12}{5} \cdot \frac{3}{5} = \frac{12 \cdot 3}{5 \cdot 5} = \frac{36}{25} = 1\frac{11}{25}$$
Ответ: $$1\frac{11}{25}$$