Mathematics, 26.06.2019 17:30 Celsie
An investor received $1400 interest per annum from a sum of money, with part of it invested at 10% and the remainder at 7% simple interest. this investor found that if she interchanged the amounts she had invested she could increase her return by $90 per annum. calculate the total amount invested.
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An investor received $1400 interest per annum from a sum of money, with part of it invested at 10% a...
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