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A car covers its outward journey at 40kmph. It is towed back, over exactly the same distance at 10mph. What is the average speed over the entire journey?

A car covers its outward journey at 40kmph. It is towed back, over exactly the same distance at 10mph. What is the average speed over the entire journey?

Grade:12th pass

1 Answers

Arun
25763 Points
3 years ago
Dear student
 
40 kmph = 40/1.6 mph = 24.85 mph
 
we can apply the formula 2xy/(x+y) for average speed.
Now avg speed = 2*24.85*10/34.85 = 14.26 mph
 
 

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