$15$ years hence,Rohit will be just four times as old as he was $15$ years ago. How old is Rohit at present?

The ratio between the ages of Arun and Deepak at present is $4:3$. After $6$ years,Arun's age will be $26$ years. What is the age of Deepak at present? (in years)

In a family,mother's age is twice that of daughter's age. Father is $10 \,years$ older than mother. Brother is $20 \,years$ younger than his mother and $5 \,years$ older than his sister. What is the age of the father? (in $years$)

The ratio between the present ages of $P$ and $Q$ is $6:7$. If $Q$ is $4 \text{ years}$ older than $P$,what will be the ratio of the ages of $P$ and $Q$ after $4 \text{ years}$?

The age of a father is three times that of his son. After $5$ years,double the father's age will be five times the son's age. The present age of the father and son (in $years$) is:

The ages of $A$ and $B$ are in the ratio $6: 5$ and the sum of their ages is $44 \text{ years}$. The ratio of their ages after $8 \text{ years}$ will be: