Question

If $0.06\%$ of a number is $84$, then $30\%$ of that number is

• A. $25.2$
• B. $420$
• C. $42000$
• D. $2520$

Answer 1

The correct option is C $42000$

Let the number be = $x$
$\frac{0.06x}{100}=84$
$x=\frac{84}{.06}\times 100$
$30\%ofx=\frac{30}{100}\times \frac{84}{.06}\times 100=42000$