Answer:
7 pieces, with a short piece left over (the leftover piece is 1/24 yd long).
Explanation:
Divide the available 5/8 yd by 1/12 yd/ribbon to determine the number of pieces of 1/12 yd length could be obtained:
5
---
8
======= This can be evaluated by inverting the 1/12 and then multiplying.
1
-----
12
We get 5/8 times 12/1, or 60/8, which is equal to 7 4/8 pieces.
Tom was able to cut 7 1/12-yd pieces from the 5/8 yd piece, and has a 1/24 yd piece left over / remaining.