Answer
The average speed is not just the average of 666 mph and 121212 mph.
Hint #22 / 12
She traveled for a longer time uphill (since she was going slower), so we can estimate that the average speed is closer to 666 mph than 121212 mph.
Hint #33 / 12
To calculate the average speed, we will make use of the following:
avaerage speed: total distance/total time
What was the total distance traveled?
total distance
=distance uphill+distance downhill
=2×distance uphill
distance uphill
=speed uphill×time uphill
=6 mph×60 minutes×
60 minutes
1 hour
/60 minutes=6 miles
Substituting to find the total distance:
total distance=12
What was the total time spent traveling?
total time=time uphill+time downhill
ANd u keep on going im not going to answer it all so it dont look like copy paste but the answer is:
The average speed is 8 mph, and which is closer to 6mph than 12mph as we expected.