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Simultaneous equations

Forums › ACCA Forums › ACCA PM Performance Management Forums › Simultaneous equations

  • This topic has 0 replies, 1 voice, and was last updated 14 years ago by karenlaing.
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  • December 10, 2010 at 3:37 pm #46877
    karenlaing
    Member
    • Topics: 40
    • Replies: 36
    • ☆☆

    Hi
    Can anyone help – equations are new to me and I am trying to get to grips with them.
    Doing Q3 in June 2010 exam part C where it asks if demand for W fell by 200
    W = 00 and
    2w + 2L = 1200 by substitution L = 400
    however when I checked to see if it would work with the other equation (as I did with the others – and they did)
    200W
    7W + 5L = 3500, by substition L then = 420 – why is that? I am very confused – can you not always use either equation for substitution?

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