2019 AMC 8 Problem 8

Gilda has a bag of marbles. She gives 20\% of them to her friend Pedro. Then Gilda gives 10\% of what is left to another friend, Ebony. Finally, Gilda gives 25\% of what is now left in the bag to her brother Jimmy. What percentage of her original bag of marbles does Gilda have left for herself?

\textbf{(A) }20\qquad\textbf{(B) }33\frac{1}{3}\qquad\textbf{(C) }38\qquad\textbf{(D) }45\qquad\textbf{(E) }54

Full credit goes to MAA for authoring these problems. These problems were taken on the AOPS website.