Question

Compare A and B with greater or less signs, if: 50% of A is equal to $0.5a and 20% of B is equal to $0.2a

Answer 1

we have that
50% of A is equal to $0.5a
0.50A=0.5a----------> A=a

and
20% of B is equal to $0.2a
0.20B=0.2a---------> B=a

so
A=B

the answer is
A=B