2026 AMC 8 Problem 5

Casey went on a road trip that covered 100 miles, stopping only for a lunch break along the way. The trip took 3 hours in total and her average speed while driving was 40 miles per hour. In minutes, how long was the lunch break?

\textbf{(A)} 15 \qquad \textbf{(B)} 30 \qquad \textbf{(C)} 40 \qquad \textbf{(D)} 45 \qquad \textbf{(E)} 60

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