Mathematics
Mathematics, 21.04.2021 18:00, champqc702

A principal of $800 was invested, part at 9% and the rest at 12% per annum. After one year, the total interest earned was $79.95. How much was invested at each
rate

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A principal of $800 was invested, part at 9% and the rest at 12% per annum. After one year, the to...

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