Q:

The sum of the ages of a father and his son is 56 years. After 4 years, the father's age will be 3 times his son's age. Their ages are respectively.

• 1
  44 year and 12 year
• 2
  16 year and 44 year
• 3
  16 year and 42 year
• 4
  18 year and 36 years