Question 1182526
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Write equation as you read the problem


    x + (x+3) + 2x= 83.


Simplify and solve


    4x + 3 = 83

    4x     = 83 - 3 = 80

     x              = 80/4 = 20.


<U>ANSWER</U>.  Katy is 20 years old.
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Solved.