Question 1189011
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Jill is x  years old

Mary is 3x years old.


In 5 years

    3x + 5 = 2*(x+5).


Simplify and find x

    3x + 5 = 2x + 10

    3x - 2x = 10 - 5

       x    =    5


<U>ANSWER</U>.  Mary is 3x = 3*5 = 15 years old now.
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Solved.