math

How many pounds of hamburger that costs $1.60 per pound must be mixed with 70 pounds of hamburger that costs $2.10 per pound to make a mixture that costs $1.70 per pound.

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  3. 👁 70
asked by nina
  1. let x lbs be added

    then

    1.6x + 2.1(70) = 1.7(x+70), solve

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    posted by Reiny

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