Answer:
x (Widht) y (Length)
 1 2
 2 4
 3 6
 4 8
 5 10 
Explanation:
We can simplify the ratio 2 : 4 by dividing both terms by the greatest common factor, in this case by 2
2/2=1
4/2=2
So, with this information we can find the length multiply by 2 the width
y(length)=2*x