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Math Help - Calculating discounts

  1. #1
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    Joined
    Nov 2008
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    Calculating discounts

    Guys i couldn't solve this two equations and i need help.

    1) Enter the 2 missing pieces of information in the table below. For full marks your dollar answer(s) should be rounded to the nearest cent. For discount rate, please make sure your final answer is in percentage form and is accurate to 2 decimal places. For example 34.56%.
    List price = 0.00, Net Price = 514.5, Discount Rate = , Discount Amount =276.85.

    2) NorthCo also sells the same product but with a list price of $75.25. What rate of discount should NorthCo give to match Runners' price to its preferred customers? Note: Please make sure your final answer(s) are in percentage form and are accurate to 2 decimal places. For example 34.56%
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  2. #2
    Newbie
    Joined
    Dec 2008
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    5
    as i know for the first question:

    list price = net price + discount amount
    = 514.5 + 276.85
    = 791.35

    Discount Rate:
    list price x discount rate = net price
    791.35 x r = 514.5
    r = 514.5/791.35
    r = 0.65
    r = 65%
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