Question

The present age of the father is 4times the age of his son. After 10 years, the fathers age will become thrice the age of his son. Find the sum of the ages of the father and son

Answer 1

Answer:

let father age be X

let son age be y

Step-by-step explanation:

acc to question

present age = x=4y eq-1

after 10 years=x+10=3(y+10)

x+10=3y+30

x-3y=30-10

x-3y=20 eq-2

put eq-1 value in eq-2

x-3y=20

4y-3y=20

y=20

put value in eq-1

x=4y

x=4×20

x=80