Sally was able to drive an average of 21 miles per hour faster in her car after the traffic cleared. She drove 45 miles in traff

Question

4 years ago

13

Sally was able to drive an average of 21 miles per hour faster in her car after the traffic cleared. She drove 45 miles in traff

ic before it cleared and then drove another 36 miles. If the total trip took 4 hours, then what was her average speed in traffic?

Mathematics

1 answer:

olya-2409 [2.1K] · Answer 1 · 2022-02-07T12:00:10+03:00

olya-2409 [2.1K]4 years ago

8 0

Alright, so let's figure this out...

The total miles driven was 81. Let's go ahead and see how many times 81 goes into 4!

<em>81 / 4 = 20.25</em>

Her average was 20.25 mph. =)