1999 Gauss 8 Problem 15

The graph shown at the right indicates the time taken by five people to travel various distances. On average, which person travelled the fastest?

\textbf{(A)} Alison \textbf{(B)} Bina \textbf{(C)} Curtis \textbf{(D)} Daniel \textbf{(E)} Emily

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 Gauss contests here.