Question

A seamstress uses 12 yards of fabric to make 3 costumes for students in the chorus. How many yards will she need to make costumes for all 25 students in chorus?

Answer 1

100 yards

Explanation:

It takes 4 yards of fabric to make a costume for one student. She needs to make costumes for every student in chorus, so you just multiply this number by 25 and get 100 yards.

Answer 2

100 yards.

Explanation:

We have been given that a seamstress uses 12 yards of fabric to make 3 costumes for students in the chorus.

We will use proportions to solve the given problem.

`\frac{\text{Yards of fabric}}{\text{Costumes}}=(12)/(3)`

`\frac{\text{Yards of fabric}}{25}=(12)/(3)`

`\frac{\text{Yards of fabric}}{25}*25=(12)/(3)*25`

`\text{Yards of fabric}=4*25`

`\text{Yards of fabric}=100`

Therefore, 100 yards of fabric is needed to make costumes for 25 students.