A car can complete its journey of 300 km with an average speed of 60 km per hour. how long does it take to complete the journey? what is the speed of the car if it covers only 200 km in the same interval of time?
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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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