If $0.75 : x :: 5 : 8,$ then $x$ is equal to

Out of the number of qualified candidates from State $P$ in $2008,$ the respective ratio of male and female candidates is $11: 7.$ If the number of female qualified candidates from State $P$ in $2008$ is $126,$ what is the total number of qualified candidates (both male and female) from State $P$ in $2008?$

One year ago,the ratio of Ramu's and Somu's ages was $6:7$ respectively. Four years hence,their ratio will become $7:8$. How old (in years) is Somu?

If $a: b: c = 3: 4: 7,$ then the ratio $(a+b+c): c$ is equal to

The ratio of the number of boys and girls in a college is $7:8$. If the percentage increase in the number of boys and girls is $20\%$ and $10\%$ respectively,what will be the new ratio?

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