SOLUTION: A person travels 24 miles at 6 mph, 20 miles at 10 mph and 20 miles at 5 mph. what is the persons average rate for the complete distance?
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Question 826422: A person travels 24 miles at 6 mph, 20 miles at 10 mph and 20 miles at 5 mph. what is the persons average rate for the complete distance?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
A person travels 24 miles at 6 mph, 20 miles at 10 mph and 20 miles at 5 mph. what is the persons average rate for the complete distance?
:
Find the total distance of the trip: 24 + 10 + 20 = 54 miles
let a = the average speed of the whole trip
write a time equation; time = dist/speed
+ + =
4 + 2 + 4 =
10 =
10a = 54
a =
a = 5.4 mph is the av speed of the trip
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