8th gr algebra

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joan invested some money in bonds at 6% and $8000 less that in stocks at 5% .her total intrest is $1690. how much was invested in stocks?
help please.

  • 8th gr algebra -

    Let X be the amount invested in bonds
    X - 8000 is invested in stocks.
    Interest earned (per year) is
    1690 = .06X + .05 (X-8000) = 0.11X - 400

    Solve for X, then subtract 8000 from that (for stocks).

  • 8th gr algebra -

    Thank you

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