Q: A carpenter cut three 4 ft 6 in shelves from a 14 ft board. How long a piece was left over?

RESOLVER 4) \( \frac{20}{8} \cdot \frac{4}{3}:\left(-\frac{5}{6}\right)= \)

If I write the three measurements in descending order, which one will be in the middle? Select one: \( \begin{array}{l}54,9 \mathrm{~km} \\ 45,09 \mathrm{~km} \\ \text { - } 450,9 \mathrm{~km}\end{array} \)

e) \( 1 \frac{1}{3}+2 \frac{1}{4}-3 \frac{5}{12} \)

83 Найдите произведение: \( \begin{array}{l}\text { а) } \frac{4}{9} \cdot \frac{9}{7} \cdot \frac{7}{17} \cdot \frac{17}{28} ;\end{array} \)

4. (a5-g13-12) Tashkilotdagi ishchilaming \( 2 / 3 \) qismi ayollar. Erkak ishchilaming 315 qismi oilali va 12 nafari uylanmagan bolla, tashkilotda nechta ishchi ishlamoqda? \( \begin{array}{llll}\text { A) } 90 & \text { B) } 72 & \text { C) } 60 & \text { D) } 50\end{array} \)