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

Two numbers are in the ratio $5:3$. If $9$ is subtracted from each,the new ratio becomes $9:5$. What are the two numbers?

$A$ person distributes his pens among four friends $A, B, C$ and $D$ in the ratio $\frac{1}{3}: \frac{1}{4}: \frac{1}{5}: \frac{1}{6}$. What is the minimum number of pens that the person should have?

Two numbers are in the ratio $3:5$. If $9$ is subtracted from each,they are in the ratio $12:23$. Find the smaller number.

The ratio of boys and girls in a school is $9:5$. If the total number of students in the school is $1050$,then the number of boys is

Two numbers are in the ratio of $5:6$. If $5$ is subtracted from each number,the ratio becomes $4:5$. The numbers are: