SOLUTION: A women invested 4 times as much at 5% as she did at 6%. The total amount of interest she earns in 1 year from both accounts is $520. How much did she invest at each rate?

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Question 280404: A women invested 4 times as much at 5% as she did at 6%. The total amount of interest she earns in 1 year from both accounts is $520. How much did she invest at each rate?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
.05*4x+.06x=520
.20x+.06x=520
.26x=520
x=520/.26
x=520/.26
x=$2,000 invested @ 6%
4*2,000=$8,000 invested @ 5%
Proof:
.05*8,000+.06*2,000=520
400+120=520
520=520