alleryA taxi drives 60 km at 30 km/h and returns the same 60 km at 60 km/h. Average speed for the round trip?
A45 km/h
B36 km/h
C40 km/h
D50 km/h
Answer & Solution
Correct answer: C. 40 km/h
Total 120 km takes 2 h plus 1 h, so average speed is 120 / 3 = 40 km/h.
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