Question

21% of 1 is what number?​

Answer 1

21% of 1 is 0.21

Explanation:

Method 1:

`p\%=(p)/(100)\\\\21\%=(21)/(100)=0.21`

21% of 1:

`0.21\cdot1=0.21`

Method 2:

`\begin{array}{ccc}1&-&100\%\\x&-&21\%\end{array}\right\qquad\text{cross multiply}\\\\100x=(1)(21)\qquad\text{divide both sides by 100}\\\\x=(21)/(100)\\\\x=0.21`