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a coffee company wants a new flavor of cajun coffee. how many pounds of coffee worth $10 a pound should be added to 20 pounds of coffee worth $3 a pound to get mixture worth $6 a pound

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  1. amount to be added --- x lbs

    10x + 3(20) = 6(x+20)
    10x + 60 = 6x + 120
    4x = 60
    x = 15

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