Question

Does anyone know the answer to this.

what percent of 400 is 20.

Answer 1

5%

20 is 5 percent of 400.

Explanation:

20/400*100=5

Answer 2

so, if 400 is the 100%, what is 20 off of it in percentage?

`\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 400&100\\ 20&x \end{array}\implies \cfrac{400}{20}=\cfrac{100}{x}\implies 20=\cfrac{100}{x} \\\\\\ 20x=100\implies x=\cfrac{100}{20}\implies x=5`