Question

Starting at home, Emily traveled uphill to the hardware store for 60 minutes at just 6 mph. She then traveled back home along the same path downhill at a speed of 12 mph. What is her average speed for the entire trip from home to the hardware store and back?

Answer 1

What is the middle of 6 and 12- 6, 7, 8, 9, 10, 11, or 12?

Answer 2

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.

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