Given:
The length of first ribbon is, 7 10/27 yards.
The length of second ribbon is, 7 3/4 yards.
The length of third ribbon is, 14 5/9 yards.
The objective is to find the total length of the yard.
The total length of the yard can be calculated as,
[tex]\begin{gathered} T=7\frac{10}{27}+7\frac{3}{4}+14\frac{5}{9} \\ =\frac{199}{27}+\frac{31}{4}+\frac{131}{9} \\ =29.67\text{ yards} \end{gathered}[/tex]