If Jack walked 4 miles in 1 hour and 15 minutes, what was his rate of walking in miles per hour? Select the correct option:
A) 3.2	B) 4.5	C) 6	D) 6.25	E) 15
Distance walked in 1 hour and 15 mins = 4 miles   Speed per hour = Distance/Time = 4/(5/4)= 
<gadget id="calculator">4/(5/4)</gadget>
<output>16/5 = around 3.2</output>
3.2 miles per hour   3.2nswer 3.2
<result>A</result>
If Jack walked 4 miles in 1 hour and 15 minutes, what was his rate of walking in miles per hour?