SOLUTION: Carmella has $1200 invested in two stocks; one earns 8% per year and the other earns 12% per year. The income from the 8% stock is $3 more than the 12% stock? How much did she inve

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Carmella has $1200 invested in two stocks; one earns 8% per year and the other earns 12% per year. The income from the 8% stock is $3 more than the 12% stock? How much did she inve      Log On


   

Question 905030: Carmella has $1200 invested in two stocks; one earns 8% per year and the other earns 12% per year. The income from the 8% stock is $3 more than the 12% stock? How much did she invest in each stock?
x=dollars invested in first stock
y=dollars invested in second stock
x+y=1200
Second equation is where I'm having trouble. The total income is not stated to write the interest equation for the system.

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
.08(1200-x) - .12x = 3
96 - 3 = .20x
93/.20 = x = $465 amt at 12%. Amount at 8% is $735 {{
And... checking
.08*735 - .12*465 = 58.80 - 55.80 = 3