Hi,
Let x represent Kate's age ⇒
is Jason's age
Question States*** In 2 years, Jason will be twice as old as Kate is then
6x + 2 = 2(x+2)
6x + 2 = 2x + 4
4x = 2
x = 1/2 years old, Kate's age. Jason is 3
CHECKING our answer*** In 2 years, Jason will be twice as old as Kate is then
Kate: 

Wish You the Best in your Studies.