3. Roman Law. A man, dying, bequeathed: “If my wife gives birth to a son, let him be given $\frac{2}{3}$ of the estate, and the wife the remaining part. If a daughter is born, let her have $\frac{1}{3}$, and the wife $\frac{2}{3}$.” Twins, a son and a daughter, were born. How should the estate be divided?
3. A wise legal decision is as follows: since the will states that the son should receive twice as much as the mother, and the mother should receive twice as much as the daughter, it follows that the son should receive $\frac{4}{7}$, the mother - $\frac{2}{7}$, and the daughter - $\frac{1}{7}$ of the inheritance.

Fractions 30