Question 1152635
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Let x be the Sherry's age.


Then the Jeff's age is 2x years, according to the condition.


The equation for the total age is


    x + 2x = 72.


Simplify and solve


    3x = 72

     x = 72/3 = 24.


<U>ANSWER</U>.  Sherry is 24 years old.  Jeff is 2*24 = 48 years.
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Solved.