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

Given that $2:9::x:18.$

$\Rightarrow \frac{2}{9}=\frac{x}{18}$
$\Rightarrow 2\times 18=9\times x$
$\Rightarrow 9x=36$
$\Rightarrow x=4$