Find the average speed of a car which travels the first 30 km at a speed of 40 km h-1 and the remaining 20 km at a speed of 60 km h-1
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1
Answer:
25km/h
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Answer:
Total distance covered by car = 60 km
And, total time taken in journey t=t1+t2
t=v1s1+v2s2
=6030+4030
=45 h
Therefore, Average Speed=Total TimeTotal Distance=45 h60km=48 km/h
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