1
Let x = Debra's age
Let x + 7 = Pamela's age
In six years, Debra will be (x + 6) years old.
In six years, Pamela will be (x + 13) years old.
Pamela will also be two times older than Debra's age in six years.
x + 13 = 2(x + 6)
x + 13 = 2x + 12
x = 1
So, Debra's current age is 1.