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8 January, 21:53

Marie earned an extra $10,000 last year from a commission-based job. She invested part of the money at 10% and the rest at 8%. She made a total of $940. How much was invested at 8%? How much was invested at 10%?

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  1. 9 January, 00:14
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    X amount invested at 10%

    .10x +.08 (10000-x) = $940

    x = 140/.02 = 7000, invested at 10%. 300010000-7000 at 8%
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