+36 Three years ago, Austin was one-third as old he will be in fifteen years. How old is Austin?
+102 We can setup an equation:
Let \(x\) be Austin's age.
We can make this equation: \(x -3 = \frac{1}{3} * (x+15)\) , which simplifies to \(x=12\).
Austin is 12 years old.
Hope this helps! 
AnxiousLlama
