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Math Help - One question.

  1. #1
    termintor69
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    One question.

    I have my school certificate (year 10) tomorrow, I just have one question that I'm not sure how to do. I've asked a few friends and they have forgotten too. I've attached the image. The answer is B but does anyone know how to get it?
    Attached Thumbnails Attached Thumbnails One question.-maths.jpg  
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  2. #2
    MHF Contributor kalagota's Avatar
    Joined
    Oct 2007
    From
    Taguig City, Philippines
    Posts
    1,026
    Quote Originally Posted by termintor69 View Post
    I have my school certificate (year 10) tomorrow, I just have one question that I'm not sure how to do. I've asked a few friends and they have forgotten too. I've attached the image. The answer is B but does anyone know how to get it?

    \left( {\frac{RRP - P}{RRP}}\right) 100 \% = \left( {1 - \frac{P}{RRP}}\right) 100 \%
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