Answer:
Zarina is 8
Explanation:
this is a little bit of what goes on in my head
400 the product of the ages / 50 her fathers age = ? her age
400 / 50 = 8
but you could also they can each be divided by 10
400 / 10 = 40
50 / 10 = 5
40 / 5 = 8
Zarina is 8 years old