30) A motorcyclist drives from place A to B with a uniform speed of 30 km h and returns from place B to A with a uniform speed of 20 km h.Find his average speed.

30) A motorcyclist drives from place A to B with a uniform speed of 30

1.	30) A motorcyclist drives from place A to B with a uniform speed of 30 km h and returns from place B to A with a uniform speed of 20 km h.Find his average speed.
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30) A motorcyclist drives from place A to B with a uniform speed of 30 km h and returns from place B to A with a uniform speed of 20 km h.Find his average speed.​

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30) A motorcyclist drives from place A to B with a uniform speed of 30 km h and returns from place B to A with a uniform speed of 20 km h.Find his average speed.