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  • Oct 8, 2011, 12:19 PM
    bluepooh07
    Math mixture problems?
    A store mixes red fescue worth $12 per pound and chewings fescue worth $15 per pound. The mixture it to sell for $14 per pound. Find how much of each should be used to make a 228 pound mixture
  • Oct 9, 2011, 05:59 AM
    Unknown008
    Let the amount of the red fescue be 'a' and that of the other be 'b'

    The total mixture will have a mass of a + b = 228

    Then, their price will be related to their mass.

    1 pound -> $12
    a pounds -> 12a

    So, b pounds -> 15b

    So that:
    12a + 15b = 14

    You have two equations with two unknowns. Find a and b using simultaneous equations :)

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