To determine how many yards of ribbon Lucia has, you multiply the number of ribbon pieces by the length of each ribbon.
Lucia has 18 pieces of ribbon, and each piece is \( \frac{5}{6} \) of a yard long.
So, the total length of the ribbon in yards is:
\[ 18 \times \frac{5}{6} \]
To calculate this, first multiply 18 by 5:
\[ 18 \times 5 = 90 \]
Next, divide 90 by 6:
\[ \frac{90}{6} = 15 \]
Therefore, Lucia has a total of 15 yards of ribbon.
Now, let's express this in terms of sixths:
15 yards can be expressed as:
\[ 15 = \frac{15 \times 6}{6} = \frac{90}{6} \]
So, Lucia has \( \frac{90}{6} \) sixths of a yard of ribbon.
To complete the fill-in-the-blank choices:
- Choose 15
- Choose 90
Final statement: Lucia has 15 yards of ribbon, which is equivalent to 90 sixths of a yard.