Question

The sum of ages of father and son os 45 years. Five years ago the product of their ages was 4 times the age of father at that time . Find the present age

Answer 1

Step-by-step explanation:

Let the present age be x

Five years ago product of their age was 4 x the age of father.

ATQ

➡️ x + 45 = 4x - 5

➡️ x - 4x = - 5 - 45

➡️ - 3x = - 50

➡️ x = 50

3

Answer 2

Step-by-step explanation:

let age of son=x yrs

age of father=45-x

as per question,

(x-5) *(45-x-5) =4*(40-x)

or, 40x-200-x2+5x=160-4x

or, x^2-49x+360=0

or, x=40, 9

age of son & father: 9 & 36 yrs