Posted by **ronie ** on Thursday, December 2, 2010 at 9:10am.

kristyn is 4 yrs younger than mario.three years from now she will be two thirds as old as mario. find the present age

- algebra -
**Reiny**, Thursday, December 2, 2010 at 9:23am
NOW:

Mario --- x

Kristyn --- x-4

3years from now:

Mario ---- x+3

Kristyn--- x-1

"Three years from now, she will be 2/3 Mario's age"

----> (x-1) = (2/3)(x+3)

3x-3 = 2x+6

x=0

So now Mario is 9 and Krystyn is 5

check out both conditions stated, it works

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