SOLUTION: 7. At some point during the lives of you and the youngest person, your age will be three times his/her age at that moment. Write an equation which models how old in years each of y

Question 880156: 7. At some point during the lives of you and the youngest person, your age will be three times his/her age at that moment. Write an equation which models how old in years each of you will be when you are three times as old as the younger person.
I was 25 when she was born. I can not figure out how to write the equation.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The difference in their ages never changes
I can call this difference
Let = the age of the younger person
Let = the age of the older person

I want the age of the older person to be , so

------------

This is telling me that when the older person is 3/2
times the difference in their ages, then the older
person will be 3 times the age of the younger
----------------
To test this, I'll say
Older person = 42
Younger person = 9

and

Older =
Younger =
Younger =
-------------------
check:

It works

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