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 achieved by the person?
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Answered by
2
Step-by-step explanation:
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
1
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
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