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

{3 + i, 3 - i, 3, -1}

step-by-step explanation:

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step-by-step explanation: