Level:
Project ID:
1003029503
Source Problem:
Accepted:
1
Clonable:
1
Easy:
1
Paul drove the first halfway of a test track at a constant speed of \( 20\,\mathrm{kph} \) and the second halfway at a constant speed of \( 30\,\mathrm{kph} \). We wish to know Paul's average speed. What type of the average do we need to use?
Harmonic mean
Arithmetic mean
Geometric mean
Weighted arithmetic mean