Answer:
38 yards
Explanation:
First, subtract to find out how much money was spent.
30 - 25.06
= 4.94
Then divide to find out how many groups of $0.13 are in $4.94.
4.94 ÷ .13
= 38
Ashley bought 38 yards of ribbon.
38 × .13 = 4.94
4.94 + 25.06 = 30
This answer does not consider tax at all. Because it wasn't mentioned in the question and it complicates the problem. So probably don't worry about tax. Unless your teacher /book/program said to consider it. I can edit the answer.
Also, if they said to write an equation:
Let x = yards of ribbon
30 - .13x = 25.06
subtract 30
-.13x = -4.94
divide by -.13
x = 38