The word "of" means multiply in mathematical terms
Follow these steps if that is what you meant!
[tex]45%(50)[/tex]
[tex] \frac{45}{100} = 0.45 [/tex]
Take [tex] 0.45 [/tex] and multiply it by [tex]50 [/tex]
[tex]0.45 (50)[/tex]
Therefore, your answer would most likely: [tex]22.5 [/tex]
