Question

If 2 : 9 :: x : 18, then find the value of x.

• A. 4
• B. 8
• C. 10
• D. 12

Answer 1

The correct option is A

4

2 : 9 :: x : 18 [Given]
$\Rightarrow$ $\frac{2}{9}=\frac{x}{18}$
$\Rightarrow$ $2\times 18=9\times x$
$\Rightarrow$ $9x=36$
$\Rightarrow$ $x=4$
$\therefore$ If 2 : 9 :: x : 18, then the value of x is 4.