SOLUTION: Janay invested a total of $1200, some in an account earning 6% simple interest, and the rest in an account earning 4% simple interest. How much did she invest in each account if af

Question 945660: Janay invested a total of $1200, some in an account earning 6% simple interest, and the rest in an account earning 4% simple interest. How much did she invest in each account if after one year she earned $64 in interest? set up an equation to solve.
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x = dollars invested at 6%
y = dollars invested at 4%
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x + y = 1200
0.06x + 0.04y = 64
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put the system of linear equations into standard form
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x + y = 1200
0.06x + 0.04y = 64
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copy and paste the above standard form linear equations in to this solver:
http://sooeet.com/math/system-of-linear-equations-solver.php
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solution:
x = 800
y = 400
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