If you bike for 3 hours at 10 mph and then walk for 1 hour at 2 mph, what would be your average speed?
Average Speed =Distance covered / Time
3 hours x 10 mph =30 miles
1 hour x 2 mph =2 miles
30 + 2 =32 miles - total distance covered.
3 hours + 1 hour = 4 hours - total time
Average speed =32 miles / 4 hours =8 mph.
+205 
