# Motorcyclist 8671

The motorcyclist was riding:

a) the first half of the driving time at a speed of 30 km/h, the second half of the time at a speed of 60 km/h,

b) the track's first half at a speed of 30 km/h and the second half at a speed of 60 km/h.

Determine its average speed.

a) the first half of the driving time at a speed of 30 km/h, the second half of the time at a speed of 60 km/h,

b) the track's first half at a speed of 30 km/h and the second half at a speed of 60 km/h.

Determine its average speed.

### Correct answer:

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