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Question

A car moves with a speed of 30km/h1 for half an hour,for 25km/h1 one hour and 40km/h1 for two hours.Calculates the average speed

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Solution

Average speed =totaldistancetotaltime
The distance covered=30×12+25×1+40×2=120km
Time taken=0.5+1+2=3.5h
Hence,
Average speed=1203.5=34.286km/h

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