Hi,
The sum of ages of Kevin and Ana is 58.
Let x represent Kevin's age. Then Ana's age is (58-x)
In four years time..according to the question
x+4 = (58 -x) +2
simplify and solve
2x = 56
x = 28 is Kevin's age now. Ana is 30.
checking our answer
32 = 30 + 2