I ran 15 km took me 150 minutes What was average speed

Question

i ran 15 km took me 150 minutes What was the average speed 

Answer 1

distance = rate x time

 

rate = distance/time

 

distance = 15 km

 

time = 150 minutes = 150 min * 1 hour/60 min = 150/60 = 15/6 = 5/2 = 2.5 hours

 

15 km / 150 min = 15 km / 2.5 hours =  6 km/hour

 

6 km * 1 mile / 1.6 km = 3.75

 

6 km per hour or 3.75 mph