Question 98
(Name)              (Age now)            (Age after 5 years)

(Maria)              (7+4x)               (7+4x+5 = 12+4x)

(Angelica)           (7+x)                (7+x+5 = 12+x)

The sum of their ages now is 71

12+4x+12+x =71
24+5x =71
5x =71-24
5x =47
x =47/5 =9.4

Maria : 7+4(9.4) =44.6
Angelica : 7+9.4 =16.4

Verify the answer:

12+4(9.4)+12+9.4 =71
71 =71