Age Difference Between a Girl and a Boy Interview Question

To solve this question, let's first determine the current age of the boy. We are given that the boy is currently four years old. Next, we are told that the girl is twice as old as the boy.

After four years have passed, the boy will be four years (current age) + four years = 8 years old. Since the girl is twice as old as the boy, her current age would be 8 years (boy's age after four years) x 2 = 16 years old.

Therefore, the age of the girl, after four years have passed, would be 16 years old.