Each question is followed by two statements, A and B. Answer each question using the following instructions.
- Choose $1$ if the question can be answered by using statement A alone but not by using B alone.
- Choose $2$ if the question can be answered by using statement B alone but not by using A alone.
- Choose $3$ if the question can be answered by using either statement alone.
- Choose $4$ if the question can be answered by using both the statements together but not by either statement.
A family has only one kid. The father says “after 'n' years, my age will be $4$ times the age of my kid.” The mother says “after 'n' years, my age will be $3$ times that of my kid.” What will be the combined ages of the parents after 'n' years?
- The age difference between the parents is $10$ years.
- After “$n$” years, the kid is going to be twice as old as she is now.