alleryOn a 100 km journey the first 60 km are run at 30 km/h and the remaining 40 km at 20 km/h. Average speed?
A24 km/h
B26 km/h
C25 km/h
D28 km/h
Answer & Solution
Correct answer: C. 25 km/h
Times are 2 h and 2 h, so 100 km in 4 h gives 25 km/h.
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