The answer is 8x I believe
The longest piece is 24 ft and the smallest piece is 4 ft
(3,367/18,500)=0.182 which is <em>18.2%</em>
You will take 100 = 15.5x - 7 and solve.
the end product comes out to be 6 = x or (OCD is kicking) x = 6.
hope this helps (; hmu if u need more info