alleryA driver does 3 hours at 40 km/h and then 2 hours at 60 km/h. What is the average speed?
A46 km/h
B48 km/h
C50 km/h
D52 km/h
Answer & Solution
Correct answer: B. 48 km/h
Distance is 120 + 120 = 240 km in 5 hours, so the average is 48 km/h.
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