Question 1123750
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<U>Answer</U>.  &nbsp;&nbsp;Kobby is &nbsp;12&nbsp; years old;  &nbsp;Kofi is &nbsp;48&nbsp; years old.


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Actually, this problem can be solved mentally and momentarily, as soon as you completed reading the condition.


But if you want to use Algebra, here it is:


    4x - x = 36

    3x = 36

    x = 36/3 = 12  is the Kobby age.</pre>