150% of A is equal to $120 and 120% of B is equal to $90

a=80 + b=75

Step-by-step explanation:

150% of A is equal to $120 and 120% of B is equal to $90

150%*A=$120 + 120%*B=$90

150/100*A=$120 + 120/100*B=$90

Cross multiply at each equal sign

150A*1=$120*100 + 120B*1=$90*100

150a=$12000 + 120b=9000

divide by 150 at A side and 120 at B side

150a/150=$12000/150 + 120b/120=9000/120

a=80 + b=75

A is larger