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Algebra 2 URGENT

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Sally invested a total of $4500, some at 9% per year and the rest at 6% per year. The return from the 9% investment exceeds that from the 6% investment by $180. How much did she invest at each rate?

  • Algebra 2 URGENT - ,

    I can't tell you how to set it up but I can tell you that she invested $3000 at 9% and $1500 at 6%.

    3000 x .09 = 270
    1500 x .06 = 90
    270 - 90 = 180

  • Algebra 2 URGENT - ,

    let the amount invested at 9% be x
    then the amount invested at 6% is 4500-x

    .09x + .06(4500-x) = 180

    solve for x

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