If the income of $A$,$B$,and $C$ is in the ratio of $2: 5: 11$ and the income of $B$ is ₹ $291$ more than that of $A$,then the income of $C$ is (in ₹).

Two numbers are in the ratio $1: 2$. If $7$ is added to both,their ratio changes to $3: 5$. The greatest number is

Salaries of Ravi and Sumit are in the ratio $2:3$. If the salary of each is increased by $Rs. 4000$,the new ratio becomes $40:57$. What is Sumit's salary (in $Rs.$)?

The ratio of the earnings of $A$ and $B$ is $4:7$. If the earnings of $A$ increase by $50\%$ and those of $B$ decrease by $25\%$,the new ratio of their earnings becomes $8:7$. What are $A$'s earnings (in $Rs.$)?

If $A: B = 3: 4$ and $B: C = 8: 9$,then find the value of $A: B: C$.

Three numbers are in the ratio of $3:2:5$ and the sum of their squares is $1862$. The smallest of these numbers is: