An item on sale costs %50 of the original price. The original price was 45$. Find the sale price.

Please help! I will give the brainiest!

Will used 20 colored tiles to make a design in art class. 5/20 of his tiles were red. what is an equivalent fraction for the red tiles?

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Need plz been trying to do it for a long time and still haven’t succeeded