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Mathematics, 15.12.2020 01:50 dozsyerra

a total of $9000 is invested, part of it at 10% and the rest at 12%. the total intrest after one year is $1030. how much was invested at each rate

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a total of $9000 is invested, part of it at 10% and the rest at 12%. the total intrest after one yea...
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