Business, 12.02.2020 21:46, lyss12326

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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Brian earned $14,000 last spring giving swimming lessons. He invested part of the money at 5% simple...