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Homework Help: More SAT math questions.

  1. Jul 7, 2009 #1


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    1. The problem statement, all variables and given/known data
    (n/(n-1)) x (1/n) x (n/(n+1)) = 5/k for positive integers n and k, what is the value of k>

    2. Relevant equations

    3. The attempt at a solution

    I multiplied the left side out to be (n/(n^2-1) and set it equal to 5/k

    I got stuck right there.
  2. jcsd
  3. Jul 7, 2009 #2


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    Gold Member

    So what you've gotten is, n/(n2 - 1) = 5/k

    If that's true, then we should have,

    (n2 - 1)/n = k/5

    Since we know that n != 0
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