SOLUTION: calculate the average speed for driving 60 mph for 100 miles first, then flying 360 mph for 400 miles.

Question 356940: calculate the average speed for driving 60 mph for 100 miles first, then flying 360 mph for 400 miles.
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
The first part of the trip was made in 100mi/(60mi/hr) = 5/3 hrs
The 2nd part of the trip was made in 400mi/(360mi/hr) = 10/9 hrs.
Therfore the trip took 5/3hr + 10/9hr = 25/9 hrs.
Total distance traveled was 100 miles + 400miles = 500 miles.
Therefore average speed was 500miles/(25/9 hr) = 180 miles per hour.

RELATED QUESTIONS
You drive 100 miles. Over the first 50 miles you drive 50 mph, and over the second 50... (answered by ewatrrr)

I went on a trip that was a total of 300 miles. The first 100 miles I traveled at 60 mph. (answered by josgarithmetic)

A man drove the first 75 miles of a trip at an average of 50mph. He then drove the next... (answered by ankor@dixie-net.com)

A car drives 400 miles at 60 mph then 150 miles at 40 mph then 10 miles at 25 mph.How... (answered by josmiceli)

A car travels 100 miles at 60 mph and then a further 150 miles at 75 mph. Find A) the... (answered by Alan3354)

A car drives 400 miles at 6 mph then 150 miles at 40 mph then 10 miles at 25 mph how long (answered by josgarithmetic,MathTherapy,Alan3354)

Your Going on a trip that is 60 miles long.. First half of the trip you averaged 30 mph.. (answered by solver91311)

expected to maintain an average speed of 60 mph for 2 miles, unfortunately engine... (answered by solver91311)

sam was driving to chicago his rate for the first 120 miles was 10 mph than his rate for... (answered by Alan3354)