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24 March, 19:10

A grocer want to mix two kinds of coffee. One kind sells for $1.15 per pound, and the other sell for $1.40 per pound. He wants to mix a total of 30 pounds and sell for $1.35 per pound. How many pounds of each kind should he use in the new mix? Rozier want to mix two kinds of coffee. One kind sell for $1.15 per pound, and the other sell for $1.40 per pound. He wants to mix a total of 30 pounds and sell for $1.35 per pound. How many pounds of each kind should he use in the new mix

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  1. 24 March, 22:32
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    24 pounds of 1.35 and 6 pounds of 1.15

    Step-by-step explanation:

    First you need to be able to write equations:

    x: pounds of 1.40 coffee in the mix

    y: pounds of 1.15 coffee in the mix

    He wants to mix 30 pounds:

    x+y = 30

    Also the new price will be 1.35:

    1.40*x + 1.15*y = 1.35

    Replacing y = 30 - x

    1.40*x + 1.15 (30-x) = 1.35

    Solving that you get:

    x = 24

    y = 6
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