Answer :

[tex]\begin{array}{ccc}60&-&100\%\\\\18&-&p\%\end{array}\ \ \ \ |cross\ multiply\\\\\\60p=18\times100\\\\60p=1800\ \ \ \ \ |divide\ both\ sides\ by\ 60\\\\\boxed{p=30\ (\%)}[/tex]

[tex]Answer:18\ is\ 30\%\ of\ 60.[/tex]
30%
60 x 0.3 = 18
18 x 10/3 = 60
Hope this helps!