The ratio of the present ages of Swati and Trupti is $4:5.$ $6 \text{ years}$ hence the ratio of their ages will be $6:7.$ What is the difference between their ages? (in $\text{years}$)

The ratio of the present ages of Sunil and Suresh is $2:3$. Four years ago,their age ratio was $5:8$. Find the present ages of Sunil and Suresh (in $years$).

The sum of the ages of two brothers, having a difference of $8 \, \text{years}$ between them, will double after $10 \, \text{years}$. What is the ratio of the age of the younger brother to that of the elder brother?

The ratio of the present ages of $Ram$ and $Rakesh$ is $6:11$. $4$ years ago,the ratio of their ages was $1:2$. What will be $Rakesh$'s age after $5$ years? (in years)

The present age of Romila is $\frac{1}{4}$ that of her father. After $6\, \text{years}$, her father's age will be twice the age of Kapil. If Kapil celebrated his fifth birthday $8\, \text{years}$ ago, what is Romila's present age? (in $\text{years}$)

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: