Answer:
Let A be the amount of the percentage, P% the percentage, and x be the unknown total, then we can set the following equation:
[tex]A=x\cdot\frac{P}{100}\text{.}[/tex]Therefore, to find the total amount we solve the above equation for x:
[tex]\begin{gathered} A=x\cdot\frac{P}{100}, \\ \frac{A}{P}\cdot100=x\text{.} \end{gathered}[/tex]Example: If we know that the 30% of x is 60, then:
[tex]x=\frac{60}{30}\cdot100=200.[/tex]