$7$ years ago,the ages (in years) of $A$ and $B$ were in the ratio $4:5$; and $7$ years hence they will be in the ratio $5:6$. The present age of $B$ is (in years):

$A$ man is $24$ years older than his son. In $2$ years,his age will be twice the age of his son. The present age of the son is (in 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 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:

After replacing an old member by a new member,it was found that the average age of five members of a club is the same as it was $3$ years ago. The difference between the ages of the replaced and the new member is (in years):

The ratio of the ages of a father and a son at present is $5:2$. $4$ years hence,the ratio of the ages of the son and his mother will be $1:2$. What is the ratio of the present ages of the father and the mother?