# average speed formula problem

User Generated

xnebyvar1

Mathematics

## Description

You drive for 100 miles at 65mph. then you drive for 80 miles at 75mph. What is your average speed for the trip?

User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.

During the course of my drive, i travel in two successive speeds:

For a distance of S 1=100 miles, the speed of my car is  v 2=65 mph(miles per hour)

This means I took a time of t 1=100/65 h r s. i. e. 20/13 h r s

During second course of my drive:

For a distance of S 2=80 miles, the speed of my car is v 2= 75 miles (miles per hour)

This means I took a time of t 2=80/75 h r s. i. e. 16/15 h r s

Total time taken in the journey=t 1+t 2

= 20/13+16/15

=(300+208)/195

=508/195

=2.605 h r s

Total distance travelled during the journey=s 1+s 2

=100+80 miles

=180 miles

Average speed of my trip= Total distance /Total time

=180/2.605

=69.1 mph

### Review

Anonymous
Great content here. Definitely a returning customer.

Studypool
4.7
Indeed
4.5
Sitejabber
4.4