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  1. #1

    sat math ratio question

    How can we find the ratio of x+21 to y+21 if we know the ratio of x to y is 5:2 and the ratio of x+4 to y+4 is 7:4?

  2. #2

    Red face sat math ratio

    The ratio of x to y is 5:2 means

    The ratio of x+4 to y+4 is 7:4 means
    \Rightarrow 4(x+4)=7(y+4) [/tex]


    and


    Therefore the ratio of x+21 to y+21 will be given by the following expression

  3. #3
    Thank you very much!!

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