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Posted by on Sunday, September 19, 2010 at 8:34pm.

Three numbers whose sum is 15 are in an arithmetic progression. The product of the 1st two numbers is 2 more than the 3rd. Find the three numbers.

  • Pre-Calculus - , Monday, September 20, 2010 at 11:43am

    Designate the three numbers, in order as x, y and z.

    x<y<z

    xy = z +2 or xy - 2 = z

    x + y + z = 15

    x = 2, y = 5, z = 8

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