If A Person Drives His Motorcycle For 2 Hours At Speed Of 80 Km/Hr And Next 2 Hours At Speed 90 Km/Hr Then What Will Be The Average Speed Achived By The Person?
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dist in 1st 2hrs hrs=speed×time=80×2=160km
similarly ,
dist.in 2nd 2hrs
90×2=180km
average speed=(total dist.)/total time
(160+180)/4
=340/4=85km/hr
Answered by
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Answer:
the average speed achieved by the person is 85km
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