2025 AMC 8 Problem 7

On the most recent exam in Prof. Xochi’s class,

• 5 students earned a score of at least 95\%,

• 13 students earned a score of at least 90\%,

• 27 students earned a score of at least 85\%, and

• 50 students earned a score of at least 80\%.

How many students earned a score of at least 80\% and less than 90\%?

\textbf{(A)} 8 \qquad \textbf{(B)} 14 \qquad \textbf{(C)} 22 \qquad \textbf{(D)} 37 \qquad \textbf{(E)} 45

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