Eighteen $years$ ago,the ratio of $A$'s age to $B$'s age was $8: 13$. Their present ages are in the ratio $5: 7$. What is the present age of $A$ (in $years$)?

Three times the present age of a father is equal to eight times the present age of his son. $8$ years hence,the father will be twice as old as his son at that time. What are their present ages?

The ratio of ages of Mohan and Madhu is $3:4$. After $8$ years,their age ratio becomes $4:5$. What are the present ages of Mohan and Madhu? (in years)

The ratio of the ages of Anubha and her mother is $1:2$. After $6$ years,the ratio of their ages will be $11:20$. What was the ratio of their ages $9$ years ago?

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 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)