There are

\[20\%\] more goblins than wizards in magic club. There are
\[120\] goblins in magic club.
How many wizards are in the magic club?

Let the number of wizards in the magic club be \( W \). According to the information, there are 20% more goblins than wizards. We can create an equation from this information. Since there are 120 goblins, we represent 20% more than the number of wizards as \( W + 0.20W \).

This can also be written as:

\[ 1.20W = 120 \]

Now, solve for \( W \):

\[ W = \frac{120}{1.20} \]

\[ W = 100 \]

Therefore, there are 100 wizards in the magic club.