You can put this solution on YOUR website! Vera is 4 yrs old and Vicky is 13 yrs old, what age will each sister be when Vicky is twice as old as Vera?
:
Let t = no. of years for this to happen:
:
As simple equation:
(t+13) = 2(t+4)
t + 13 = 2t + 8
13 - 8 = 2t = t
5 = t
:
In five years: Vera is 9 yrs and Vicky is 18 yrs old
