alleryA bus covers 90 km in 2 h, then 60 km in 1 h. Its overall average speed?
A45 km/h
B60 km/h
C55 km/h
D50 km/h
Answer & Solution
Correct answer: D. 50 km/h
The overall average speed is (90 + 60) ÷ (2 + 1) = 50 km/h.
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