Question

0.5% of what number is 0.8?

Answer 1

To solve the exercise, we can use a rule of three:

`\begin{gathered} 0.5\text{\%}\rightarrow0.8 \\ 100\text{\%}\leftarrow x \end{gathered}`
`\begin{gathered} x=\frac{100\text{\%}\cdot0.8}{0.5\text{\%}} \\ x=(100\cdot0.8)/(0.5) \\ x=(80)/(0.5) \\ x=160 \end{gathered}`

Therefore, 0.8 is 0.5% of 160.