Question

47. Which of the following represents 0.2% of 1/5?

Answer 1

First think of what 0.2% is as a fraction,

$0.2\%=\frac{0.2}{100}=\frac{2\cdot10^{-1}}{10^2}=\frac{2}{10^3}=\frac{2}{1000}$

Now multiply the fraction by a fifth,

$\frac{2}{1000}\cdot\frac{1}{5}=\frac{2}{5000}$

Which then simplifies to,

$\frac{2}{5000}=\boxed{\frac{1}{2500}}$

Hope this helps :)