15. If a man runs for an hour and a half at 8 miles an hour due south; and then he continues south on a bus traveling at 55 miles an hour, for 24 minyces. How far did he travel? 16. George 334miles30.2miles35miles36miles 17. Mary buys 8 widgets for $40.00. She adds $1.00 in enhancements to each widget and sells them for $9.00 each. What is Mary's estimated gross profit margin? \begin{tabular}{|l|} \hline 25% \\ \hline 33% \\ \hline 44% \\ \hline 50% \\ \hline 67% \\ \hline \end{tabular} 17. Mary buys 8 widgets for $40.00. She adds $1.00 in enhancements to each widget and sells them for $9.00 each. What is Mary's estimated gross profit margin? 25%33%44%50%67%