34. 1/(1/24 + 1/56)

\(\frac{1}{24}+\frac{1}{56}=\frac{7}{168}+\frac{3}{168}=\frac{5}{84}\).

\(1:\frac{5}{84}=\frac{84}{5}=16,8\).

Ответ: 16,8.