The present ages of Vishal and Shekhar are in the ratio of $14: 17$. $6 \, \text{years}$ from now,their ages will be in the ratio of $17: 20$. What is Shekhar's present age (in $\text{years}$)?

$3 \text{ years}$ ago,the average age of a family of $5$ members was $17 \text{ years}$. $A$ baby having been born,the average age of the family is the same today. What is the age of the child? (in $\text{years}$)

Radha's present age is $3 \text{ years}$ less than twice her age $12 \text{ years}$ ago. Also,the ratio of Raj's present age to Radha's present age is $4:9$. What will be Raj's age after $5 \text{ years}$? (in $\text{years}$)

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 ages of $A, B$ and $C$ together is $185$ years. $B$ is twice as old as $A$ and $C$ is $17$ years older than $A$. Then,the respective ages of $A, B$ and $C$ are (in years):

$10$ years ago,Mohan was thrice as old as Ram was,but $10$ years hence,he will be only twice as old as Ram. Find Mohan's present age (in years).