If Jack walked 7 miles in 1 hour and 15 minutes, what was his rate of walking in miles per hour?	Pick one:
A) 4
B) 4.5
C) 5.6
D) 6.25
E) 15

Rationale: "distance walked in 1 hour and 15 mins = 7 miles speed per hour = distance / time = 7 / ( 5 / 4 ) = 5.6 miles per hour answer c"
Answer: C