Question

$0.5$ is what percentage of $20?$

Answer 1

We know that

$\frac{Part\left(is\right)}{Whole\left(or\right)}=\frac{Percent}{100}$

Given part$=0.5$ whole$=20$

$\therefore \frac{0.5}{20}=\frac{Percent}{100}$

Cross multiply.

$$\begin{gathered} 0.5\times 100=Percent\times 20 \\ Percent=\frac{0.5\times 100}{20} \\ Percent=2.5\% \end{gathered}$$

Hence, percent of $20$ is $0.5$ is $2.5\%$