If Jack walked 9 miles in 1 hour and 15 minutes, what was his rate of walking in miles per hour? Answers:
A) 4  B) 4.5  C) 6  D) 6.25  E) 7.2
Distance walked in 1 hour and 15 mins = 9 miles   Speed per hour = Distance/Time = 9/(5/4)= 
<gadget id="calculator">9/(5/4)</gadget>
<output>36/5 = around 7.2</output>
7.2 miles per hour   Answer 7.2
<result>E</result>
If Jack walked 9 miles in 1 hour and 15 minutes, what was his rate of walking in miles per hour?