Question

tell me the answer of question's no 4​

Answer 1

Answer:

Let 5 years ago, son's age is x then father's age is 7x

5 years later from present means son's age will be x+10 and father's age will be 7x+10

According to question, 7x+10 = 3(x+10)

4x = 20

x = 5

son's present age = 5+5 = 10 years

fathers present age = 7*5 + 5 = 40years