Answer:
Sweater: 392

Hat: 78

Scarf: 83

Explanation:
Set the sweater = x
The hat =
x
The scarf =
x + 5
x +
x +
x + 5 = 555
Combine like terms
1
x + 5 = 555
Subtract 5 from both sides
1
x = 550
Divide by 1

x = 392
This is how much wool was used for the sweater.
Divide by 5 to get the hat = 78

Add 5 to that to get the scarf: 83
