Eighteen $years$ ago,a father was three times as old as his son. Now the father is only twice as old as his son. Then the sum of the present ages of the son and the father is

The ratio between the present ages of $P$ and $Q$ is $5: 7$. If the difference between $Q$'s present age and $P$'s age after $6$ $years$ is $2$,what is the sum of ages of $P$ and $Q$ at present? (in $years$)

The ratio of the present age of Manoj to that of Wasim is $3:11$. Wasim is $12 \text{ years}$ younger than Rehana. Rehana's age after $7 \text{ years}$ will be $85 \text{ years}$. What is the present age of Manoj's father,who is $25 \text{ years}$ older than Manoj? (in $\text{years}$)

One $year$ ago the ratio between Samir and Ashok's age was $4: 3$. One year hence the ratio of their ages will be $5: 4$. What is the sum of their present ages in $years$?

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 $\text{years}$)?

Radha's present age is three years less than twice her age $12$ years ago. Also,the ratio between Raj's present age and Radha's present age is $4:9$. What will be Raj's age after $5$ years? (in years)