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Posted by on Monday, February 25, 2013 at 1:28am.

a,b and c are real numbers such that ab=44, bc=112 and a+c=13. What is the value of b?

  • algebra - , Monday, February 25, 2013 at 1:31am

    a = 44/b
    c = 112/b
    so
    44/b + 112/b = 13

    156 = 13 b

    b = 12

  • algebra - , Tuesday, February 26, 2013 at 8:49pm

    This is a problem posted by Brilliant (dot) org, which provides weekly problem sets for students to work on independently.

    Please refrain from posting your solution for this student to copy.

    -Calvin Lin
    Brilliant Challenge Master

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