SOLUTION: lisa jenkins invested part of her $8000 inheritance in an account earning 5% simple interest and the rest in an account earning 4% simple interest. how much did lais invest in each

Question 274507: lisa jenkins invested part of her $8000 inheritance in an account earning 5% simple interest and the rest in an account earning 4% simple interest. how much did lais invest in each account if she earned $365 in total interest after 1 year?
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
.05x+.04(8,000-x)=365
.05x+320-.04x=365
.01x=365-320
.01x=45
x=45/.01
x=4,500 amount invested @ 5%
8,000-4,500=3,500 amount invested @ 4%
Proof:
.05*4,500+.04*3,500=365
225+140=365
365=365
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