Question 1181889: Translate the following application into a system of linear equations, but do not solve.
"John invested $12,000 in two accounts, one that earns 7% interest and another that earns 4%. If the total interest earned after one year was $507.90, how much was invested in each account?"
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39630)   (Show Source):
You can put this solution on YOUR website! One year, assuming same as simple interest
$12000 all of what invested
v invested at 7%
12000-v invested at 4%
 ------------simplify and solve.
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If you really want A SYSTEM OF TWO EQUATIONS, then maybe
Answer by MathTherapy(10557)  (Show Source):
You can put this solution on YOUR website! Translate the following application into a system of linear equations, but do not solve.
"John invested $12,000 in two accounts, one that earns 7% interest and another that earns 4%. If the total interest earned after one year was $507.90, how much was invested in each account?"
Let amount invested in the 7% and 4% be S and F, respectively
Then we have: S + F = 12,000 ------- eq (i)
We also get: 07S + .04F = 507.9 ---- eq (ii)
That's IT!!
On one hand, your request was NOT to solve, but then a solution was requested after. Which is it?
If you want a solution, you should be able to do that on your own since you have the equations to do so.
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