Answer:
1080 total inches of ribbon. 60 pieces of ribbon can be cut.
Explanation:
Firstly, the dressmaker has 15 rolls of ribbon that are 6 feet in length. Multiply those to see how many feet in total, 90. Then multiply this by 12 (there are 12 inches in a foot) to get the amount of total inches: 1080.
This is the answer to the question below the problem.
To answer the bigger question at hand:
You would need to take 1080 divided by 18 to find how many pieces the dressmaker can cut. She can cut exactly 60 pieces from her 15 rolls of ribbon.