Question

If $90\%$ of $x$ is $315km$, then the value of $x$ is :

• A. $325km$
• B. $350km$
• C. $350m$
• D. $325m$

Answer 1

The correct option is B

$350km$

Find the value of $x$

Given, $90\%$ of $x$ is $315km$,

$\Rightarrow \frac{90}{100}\times x=315$

$\Rightarrow x=315\times \frac{100}{90}$

$\Rightarrow x=350km$

Therefore, the value of $x$ is $350km$, so, option(B) is the correct answer.