2008 Pascal Problem 8

Olave sold 108 apples at a constant rate over 6 hours. If she continues to sell apples at the same rate, how many apples will she sell in the next 1 hour and 30 minutes?

\textbf{(A)}\ 27\quad \textbf{(B)}\ 33\quad \textbf{(C)}\ 45\quad \textbf{(D)}\ 36\quad \textbf{(E)}\ 21

If there are no answer choices shown, enter a numerical answer.

Full credit to this problem is given to the CEMC, you may view all Pascal contests here.