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A store mixes Kenyan Coffee worth $11 per Kilogram and venezuelan coffee worth $14 per Kilogram. The mixture is to sell for $12 per kilogram. Find out how much of each should be used to make a 396-Kilogram Mixture

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    Work with the total dollar value of the coffees.

    Let K be the amount of Kenyan coffee
    V is the Venezuelan coffee
    K+V=396

    11K + 14(396-K) = 12*396
    11K + 14*396 - 14K = 12*396
    3K = 2*396 = 792
    K = 264
    V = 132

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