Question 86888
Let Warren's age now = x

: Erin's age is 3 times Warren's. Therefore:
 Erin's age now is 3x
:
In 4 years she will be twice as old as he will be. 
Warren's age in 4 years = (x+4)
Erin's age in 4 years = (3x+4)
Twice Warrens age = 2(x+4)
:
How old is each now?
How would you make an equation out of this?
3x + 4 = 2(x+4)
:
Can you do this now?