Answer:
The speed of Natalie in miles per hour is 1.2 mph.
Step by step explanation:
distance covered by Natalie, d = 3/5 mile
time of motion of Natalie, t = 1/2 hour
speed = distance/time
speed = 3×2/5 = 6/5
Thus, the speed of Natalie in miles per hour is 1.2 mph.