Answer:
9 1/6 yd
Step-by-step explanation:
First, list the lengths of ribbon Laura had or acquired:
8 3/10 yd + 4 3/5 yd. This is equivalent to 8 3/10 yd + 4 6/10 yd, or
12 9/10 yd.
Next, list the lengths of ribbon Laura used:
1 2/5 yd + 2 1/3 yd. The LCD here is 15, so we have 1 6/15 yd + 2 5/15 yd.
Summing up, we get 3 11/15 yd.
Subtract this length from the original 12 9/10 yard with which Laura began:
12 9/10 yd or 12 27/30 yd (LCD is 30)
- 3 11/15 yd or -3 22/30 yd
Subtracting the latter two quantities, we get 9 5/30 yd, or 9 1/6 yd
