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

The monthly salaries of $A, B$ and $C$ are in the ratio $2: 3: 5$. If $C$'s monthly salary is $Rs. 12000$ more than that of $A$,then $B$'s annual salary is (in $Rs.$):

If $\frac{1}{2}$ of $A = \frac{2}{5}$ of $B = \frac{1}{3}$ of $C$,then $A : B : C$ is

If $18: x = x: 8$,then $x$ is equal to

Find the number which,when subtracted from the terms of the ratio $12: 17$,makes it equal to the ratio $2: 3$.

Three brothers divided ₹ $1620$ among themselves in such a way that the share of the second brother is equal to $\frac{5}{13}$ of the share of the other two combined. What is the share of the second brother?