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A coffee manufacture wants a new blend of coffee that sell for $3.90 per pound by mixing two coffees that sell for $2.75 and #5.oo per pound respectively. What amount of each coffee should be blended to obtain the desired mixture? Assume that the total weight of the desired blend is 100 pounds

  • maths -

    amount of $2.75 coffe --- x
    amount of $5.00 coffee --- 100-x
    solve for x ......

    2.75x + 5(100-x) = 3.9(100)

  • maths -

    If a pound of coffee costs $12, how many ounces can be bought for $3.90?

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