Sureshdrives his car to a place 150 km away at an average speed of 50 km/hr andreturns at 30 km/hr. what is his average speed for the whole journey ?
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For away from place
Distance = 150km
Speed= 50km/h
Time=150/50=3h
And for return
Distance =150km
Speed =30km/h
Time= 150/30=5h
Average speed =total distance /total time
=300/8=37.5km/h
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