A girl is 28 years younger than her father. The sum of their ages is 50 years. Find the ages of the girl and her father.
11 years and 39 years
Let girl = x, father = x + 28.x + (x + 28) = 50 ⇒ 2x + 28 = 50 ⇒ 2x = 22 ⇒ x = 11, father = 39.