Answer:
20 yards.
Step-by-step explanation:
We have been given that Doreen uses 8 yards of fabric to make 2 costumes.
Let us find the fabric used to make one costume by dividing 8 by 2.
[tex]\text{The amount of fabric used to make each costume}=\frac{8\text{ yards}}{\text{2 costumes}}[/tex]
[tex]\text{The amount of fabric used to make each costume}=\frac{4\text{ yards}}{\text{costume}}[/tex]
As Doreen uses 4 yards of fabric to make each costume, let us multiply fabric used to make each costume by 5 to find the fabric needed to make 5 costumes.
[tex]\text{Fabric used to make 5 costumes}=\frac{4 \text{ yards}}{\text{ costume}}\times 5\text{ costumes}[/tex]
[tex]\text{Fabric used to make 5 costumes}=4\times 5\text{ yards}[/tex]
[tex]\text{Fabric used to make 5 costumes}=20\text{ yards}[/tex]
Therefore, Doreen will use 20 yards of fabric to make 5 costumes.
