Answer:
9/13 or 0.69 yards
Step-by-step explanation:
To find the amount of fabric per scarves, divide the number of yards by the number of scarves.
9/ 13 = 0.69 yards per 1 scarf
8 / 15 for the whole kitchen floor
( ( 2 / 5 ) / 3 ) * 4 = 8 / 15
86093440 /129140163
Explanation in the Images. I can clarify further if needed.