SOLUTION: A car travels a distance of 75 km at the speed of 25 km/h. It covers the next 25 km of its journey at the speed of 5 km/h and the last 50 km of its journey at the speed of 25 km/h.
Algebra.Com
Question 874945: A car travels a distance of 75 km at the speed of 25 km/h. It covers the next 25 km of its journey at the speed of 5 km/h and the last 50 km of its journey at the speed of 25 km/h. What is the average speed of the car?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Add the distances.
d = r*t
t = d/r
Find the 3 times, add them.
Divide total distance by total time.
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