Mathematics, 12.10.2019 06:30 nevaehkirk1997

Phyllis invested 66000 dollars, a portion earning simple interest rate of 5% per year and the rest earning a rate of 7% per year. after one year the total interest earned on these investments was $3980. how much money did she invest at each rate?

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Phyllis invested 66000 dollars, a portion earning simple interest rate of 5% per year and the rest e...