2442
2+4+4+2=12
3333
3+3+3+3=12
1551
1+5+5+1=12
4224
4+2+2+4=12
5115
5+1+1+5=12
6006
6+0+0+6=12
The answer is 6
In a direct proportion, the equation can be set up as
y = kx
k = y/x
k = 6/20
k = 0.3
This is simple proportions, because of their similarity:
