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Math Help - SAT question

  1. #1
    Junior Member
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    SAT question

    a certain fraction is equivalent to 2/3. if 3 is added to numerator and 1 is added to denominator, fraction is equivalent to 3/4. what's the numerator of original fraction?

    17
    18
    22
    24
    27
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  2. #2
    -1
    e^(i*pi)'s Avatar
    Joined
    Feb 2009
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    West Midlands, England
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    Re: SAT question

    \dfrac{2x+3}{3x+1} = \dfrac{3}{4}

    Solve for 2x, not x (so discard 17 and 27 immediately)
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