Question

5 years ago father's age was 7 times the age of his son 5 years later the father's age will be three times the age of his son find their present ages​

Answer 1

let present age of father and son be 'F' and 'S' respectively

5years ago father age was 7times son age

(F-5)=7(S-5)

7S-F=30----------(1)

5yr later father age thrice son age

(F+5)=3(S+5)

F-3S=10-------------(2)

Solving eq(1)&(2)

F=40yr,S=10yr