A motorcyclist drives from A to B with a uniform speed of and returns back with a speed of . Find its average speed.
Step 1. Given data:
Motorcyclist speed from A to B =
Motorcyclist speed from B to A =
Let the distance from A to B is D km.
Distance for the entire journey is km.
Step 2. Formula used:
Time taken = Distance/ Speed
Step 3. Calculations:
So, the total time taken is
Average speed = Total distance/Total time.
Average speed =
Hence, the average speed of the motorcycle is .