SOLUTION: please help me with this question, Tina is 12 years old. Her mom is 40. How many years ago was the mom exactly 5 times as old as Tina?

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Question 30155: please help me with this question,
Tina is 12 years old. Her mom is 40. How many years ago was the mom exactly 5 times as old as Tina?
Number of years?
Tina Then?
Mom then?

Answer by Paul(988) About Me  (Show Source):
You can put this solution on YOUR website!
Let the age before the current age be x
TIna's age = x-12
Her mom's age = x-40
Equation:

5(x-12)=x-40
5x-60=x-40
4x=20
x=5

Hence, it was 5 years ago sine her mom was 5 times as old as her.
PAul.