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Mathematics, 06.03.2020 10:03 cldantesBanana

Susan invests 3 times as much money at 10% as she does at 6%. If her total interest after 1 year is $1800, how much does she have invested at each rate?

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Susan invests 3 times as much money at 10% as she does at 6%. If her total interest after 1 year is...
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