Answer:
32 yards
Explanation:
Let's see, the card started out with $20 on it, and ended up with $14.88.
To find how much she spent on ribbon, we can first subtract the 2 amounts:
20-14.88
=5.12
So, Susan spent $5.12 on ribbon. We also know that each yard of ribbon was $0.16, so we can divide the spent amount ($5.12) by $0.16 to find out how many yards she bought:
5.12/0.16
=32
So, Susan bought 32 yards of ribbon.
Hope this helps :)