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-   -   Supply and demand using finite math (https://www.askmehelpdesk.com/showthread.php?t=394384)

  • Sep 7, 2009, 05:03 PM
    jkallus
    supply and demand using finite math
    The quantity demanded of a certain brand of DVD player is 3000/wk when the unit price is $485. For each decrease in unit price of $20 below $485, the quantity demanded increases by 250 units. The suppliers will not market any DVD players if the unit price is $283 or lower. But at a unit price of $508, they are willing to make available 2500 units in the market. The supply equation is also known to be linear.
  • Sep 8, 2009, 01:00 PM
    ArcSine
    ... and you're looking for the equilibrium price? If so,

    1. Determine your Demand equation and your Supply equation (both as a function of Price). Your last sentence suggests that they're both linear. Here's a freebie: Demand D as a function of Price p:

    D(p) = -12.5p + 9,062.5

    2. The equilibrium price is the unique common solution to both equations. Graphically, it's where the two lines cross (intersect), with the Demand line sloping downwards, and the Supply line with a positive slope.

    Can you roll with it from here?

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