Answer
B is greater
Work Step by Step
If A is 20% of B, then A is less than a whole part of B, so B is greater.
For example, let B=100.
$A=0.20B\longrightarrow$ substitute for B
$A=0.20(100)\longrightarrow$ multiply
$A=20$
$20\lt100$, so B is greater.
