The sum of age of mother and daughter is 45 years. Five years ago, the product of their ages is equal to the four times of his mother's age at that time. Find the present age of mother and daughter.

36,9

Let present age of mother and daughter = x and y

ATQ,

⇒ x + y = 45  and

⇒ ( x -5) ( y -5 ) = 4 ( x-5 )

⇒ y - 5 = 4

⇒ y = 9, and then x = 45 - y = 45 - 9 = 36