Answer:
20%
Step-by-step explanation:
First, set up the fraction: 4/20=x/100%
Then, cross multiply, which would make the equation: 4*100=20x
Then, simplify. 400=20x
To get x alone, divide both sides by 20.
400/20=20x/20
20%=x
So, 4 is 20% of x.
