Question

I am three times as old as my son. Five years later, I shall be two -and-a-half times as old as my son. What is my age?

Answer 1

Take the sons age be x and his dad age be y
ATQ,
y=3x
After 5 yrs,
(y+5)=5/2(x+5)
2y-5x=15
Solve the equations
Answer will be 45 yrs