Question 242089
Let John = x
Let Mom = 5x
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Five years from now mom will be three times as old as John.  So our equation becomes:
{{{5x+5=3(x+5)}}}
Now solve for x to determine John's age.
I'll let you do the algebra.
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Remember to check your answers by plugging the results in the origianl equation.  Both sides of the equation must equal to each other for the value of x to be correct.
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Done!
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PS... Mom is 25 now.