Answer:
Ana is 7 years older than her brother Juan. In two years, Ana will have double that of Juan. How old is everyone today?
x= John's age
x+7 = age Ana
in 2 years Juan will be x+2, Ana will be x+7+2 =x+9 and her age will be double that of Juan.
How old is everyone today?
2(x+2)= x+9
2x+4=x+9
2x-x=9-4
x= 5
Juan is 5 years old, Ana is 12 years old