SOLUTION: You invested a total of $15,000 at 3% and 4.5% simple interest. During one year, the two accounts earned $600. How much did you invest in each account?

Question 1067791: You invested a total of $15,000 at 3% and
4.5%
simple interest. During one year, the two accounts earned $600. How much did you invest in each account?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = amount invested @ 3%
= amount invested @ 4.5%
----------------------------------------
Use
yr

(1)
------------------

(2)
and
(3)

By substitution:

and

----------------------------
$5,000 = amount invested @ 3%
$10,000 = amount invested @ 4.5%
-----------------------------------
check:
(2)
(2)
(2)
and
(3)
(3)
(3)
and
(1)
(1)
(1)
OK

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