Answer: 5 yards of green felt and 4 yards of blue felt is used to make each quilt.
Explanation:
As per given ,
Length of green felt used to make 3 quilts = 15 yards
Then , the length of green felt used to make 1 quilt =
![(15)/(3)=5\text{ yards}](https://img.qammunity.org/2020/formulas/mathematics/middle-school/5r17l39ch6jx1axhd22xsnvnnyqnxh458c.png)
Length of blue felt used to make 3 quilts = 12 yards
Then , the length of blue felt used to make 1 quilt =
![(12)/(3)=4\text{ yards}](https://img.qammunity.org/2020/formulas/mathematics/middle-school/2nnxujm90x4x544t83bw3r9rz848i1cer2.png)
Hence, 5 yards of green felt and 4 yards of blue felt is used to make each quilt.