SOLUTION: One person invests $10,000, one part at 4% and another part at 6%. If your annual income is $520, how much do you invest in each part?

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Question 1161942: One person invests $10,000, one part at 4% and another part at 6%. If your annual income is $520, how much do you invest in each part?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
"One person invests,..."; "If your annual income is, ...";

Who is who?

If same person, then this works like a two-part mixture.

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Forget about "One person" and "your". They are the same person (assumed), someone.

Someone invests $10000; part at 4% and the rest at 6% annual rate. He earns $520 in one year of time.

x at 6% and 10000-x at 4%. The income or interest from these investments was $520.

0.06x%2B0.04%2810000-x%29=520--------solve this.