The difference between the ages of Meena and Seema is $3 \ yr$ and the ratio between their ages is $7: 8$. What is the sum of their ages (in $yr$)?

If the annual income of $A$,$B$,and $C$ is in the ratio $1:3:7$ and the total annual income of $A$ and $C$ is $Rs. 800,000$,then the monthly salary of $B$ (in $Rs.$) is: (in $,000$)

Find the compound ratio of $2:7$,$5:3$,and $4:7$.

Find the value of $x$ in the following proportion: $27: 72 :: x: 8$

If $A$ and $B$ are in the ratio $3: 4$ and $B$ and $C$ are in the ratio $12: 13$,then $A$ and $C$ will be in the ratio:

Annual incomes of Amit and Varun are in the ratio $3:2,$ while the ratio of their expenditures is $5:3.$ If at the end of the year each saves $Rs. 1000,$ the annual income of Amit is (in $Rs.$):