A father said to his son, "I was as old as you are at present at the time of your birth." If the father's age is $38$ years now, the son's age five years ago was:

The ratio of P's age and Q's age is $5:7$. If the difference between the present age of Q and the age of P six years hence is $2$ years, then what is the sum of the present ages of P and Q?

If the ages of $P$ and $R$ are added to twice the age of $Q$, the total becomes $59$. If the ages of $Q$ and $R$ are added to thrice the age of $P$, the total becomes $68$. And if the age of $P$ is added to thrice the age of $Q$ and thrice the age of $R$, the total becomes $108$. What is the age of $P$?

The product of the ages of Harish and Seema is $240$. If twice the age of Seema is more than Harish's age by $4$ years, what is Seema's age in years?

$Q$ is as much younger than $R$ as he is older than $T$. If the sum of the ages of $R$ and $T$ is $50$ years, what is definitely the difference between $R$ and $Q$'s age?

The ratio between the present ages of $A$ and $B$ is $5:3$ respectively. The ratio between $A$'s age $4$ years ago and $B$'s age $4$ years hence is $1:1$. What is the ratio between $A$'s age $4$ years hence and $B$'s age $4$ years ago?

The sum of the present ages of a father and his son is $60$ years. Six years ago, the father's age was five times the age of the son. After $6$ years, the son's age will be: