A bus travelling the first one third distance at a
speed of 10 km/h, the next one third at 20 km/h
and the last one-third at 60 km/h. The average
speed of the bus is
(a) 9 km/h (b) 16 km/h
(c) 18 km/h (d) 48 km/h
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Answer:
average speed:10+60+20÷3=30
Explanation:
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