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need help math

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Solve the problem. Roberto invested some money at 7%, and then invested $2000 more than twice this amount at 11%. His total annual income from the two investments was $3990. How much was invested at 11%?

  • need help math -

    Set up an algebra equation
    X*.07 + (2000+2*X)*.11 = 3990.

    Solve for X and then for 2000+2X

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