Question

If 90% of $x$ is 315 km, then the value of $x$ will be _____.

• A. $350km$
• B. $325km$
• C. $320km$
• D. $340km$

Answer 1

The correct option is A $350km$

We have, 90% of $x$ = 315 km
$\Rightarrow \frac{90}{100}\times x=315\Rightarrow x=\frac{315\times 100}{90}=\frac{315\times 10}{9}=350\Rightarrow x=350km$