3. Zadatak

Neka su to brojevi $3k$ i $5k$.

Tada vrijedi $\frac{1}{3} \cdot (3k + 5k) = \frac{32}{3}$.

$$\frac{8k}{3} = \frac{32}{3}$$ $$k = 4$$

To su brojevi 12 i 20.