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Three friends drove radio controlled cars around a track. The table below shows the number of laps completed by each person and the time it took.$\newline$\begin{tabular}{|l|c|c|c|}$\newline$\hline & Diane & Karen & Elsa \\$\newline$\hline Time (minutes) & $5$ & $3$ & $6$ \\$\newline$\hline Number of laps & $40$ & $18$ & $60$ \\$\newline$\hline$\newline$\end{tabular}$\newline$Write the number of laps completed per minute for each person. Then determine who drove the fastest.$\newline$Number of laps completed per minute by Diane: $\square$$\newline$Number of laps completed per minute by Karen: $\square$$\newline$Number of laps completed per minute by Elsa: $\square$$\newline$Select the person who drove the fastest.$\newline$Diane$\newline$Karen$\newline$Elsa