college algebra

An executive invests $22,000, some at 8% and some at 6% annual interest. If he receives an annual return of $1,680, how much is invested at each rate?

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  1. If x is at 8%, the remainder (22000-x) is at 6% so,

    .08x + .06(22000-x) = 1680
    ...

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    posted by Steve
  2. 77777

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