Starting at home, Emily traveled uphill to the hardware store for 60 minutes at just 6 mph. She then traveled back home along th

Question

3 years ago

13

Starting at home, Emily traveled uphill to the hardware store for 60 minutes at just 6 mph. She then traveled back home along th

e 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? (I need the rate version for this. 24 and 6 are not correct)

Mathematics

1 answer:

Bond [772] · Answer 1 · 2021-12-28T19:08:18+03:00

The distance traveled was 6 miles (6 mph times 1 hour).

The total distance traveled was 12 miles.

The downhill journey lasted (6 mi) / (12 mph), or 1/2 hr.

Thus, the average speed was

12 miles 12 mi
------------- = ------------ = 8 mph
(1 1/2 hr) (3/2) hr