Final answer:
To make 3 quilits, a total of 4.875 yards of blue and yellow fabric is needed, with 2.625 yards for blue and 2.25 yards for yellow.
Step-by-step explanation:
To calculate the total yards of blue and yellow fabric needed to make 3 quilts, we first need to find out how much of each fabric is required for one quilt. We know that one quilt requires 7/8 yards of blue fabric and 0.75 yards of yellow fabric. To find the total for 3 quilts, we multiply these amounts by 3.
For the blue fabric:
\( 7/8 \text{ yards} \times 3 = 2.625 \text{ yards} \)
For the yellow fabric:
\( 0.75 \text{ yards} \times 3 = 2.25 \text{ yards} \)
Next, we add the total yards of blue and yellow fabric together:
\( 2.625 \text{ yards (blue)} + 2.25 \text{ yards (yellow)} = 4.875 \text{ yards} \)
Thus, to make 3 quilts, a total of 4.875 yards of blue and yellow fabric is needed.