Cait is 21 and Gerri is 35 In x years time Gerri will be twice as old as Cait

Cait is 21 and Gerri is 35
In x years time Gerri will be twice as old as Cait

(a)How old will Cait be in x years time
(b)How old will Gerri be in x years time
(c)Form an equation in x and solve it
(d)interpret you answer

a) 21 + x
b) 35 + x
c) 35 + x = 2(21 + x)
    x = -7
d) 7 years ago gerri was twice as old as cait (28 vs 14).