Father's present age is x. If his son is 30 years younger than him, then the son's present age is x−30.
Father’s age is four times his son’s age two years back. Five years later the father is 15 years older to his son. What is the son’s present age?
Mukesh’s present age is three times his son’s present age and two-fifth of his father’s present age. The average of the present ages of all of them is 46 years. What is the difference between Mukesh’s son’s present age and Mukesh’s father’s present age?