Hi,         

Let x and (2x+7)represent Ben's and Brad's age NOW.

In 23 years...***

 (x+23) + [(2x+7) + 23] = 83

solving for x

 x+ 23 + 2x + 30 = 83

    3x + 53 = 83

         3x = 30

          x = 10, Ben's age NOW.  (Brad is now 27)



CHECKING our Answer***

 33 + 50 = 83

     

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