13:42

$$\frac{8}{15} : 4\frac{2}{15} = \frac{8}{15} : \frac{62}{15} = \frac{8}{15} \times \frac{15}{62} = \frac{8 \times 15}{15 \times 62} = \frac{120}{930} = \frac{4}{31}$$.

Ответ: $$\frac{4}{31}$$