brian earned $14,000 last spring giving swimming lessons. He invested part of the money at 5% simple interest & the rest at 3%. In one year, he earned a total of $570 interest. How much did he invest at each rate?
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Home » Business » brian earned $14,000 last spring giving swimming lessons. He invested part of the money at 5% simple interest & the rest at 3%. In one year, he earned a total of $570 interest. How much did he invest at each rate?