Sham covers a certain distance by the car at 35 km/hr and he returns back to the starting point by scooter with the speed of 25 km/hr. Find the average sped for the whole journey.
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Let the distance covered during the first half journey be x.
Speed during first half = 35 km/h
Time taken = x/35
Distance covered during return journey is also x.
Speed during return journey = 25 km/h
Time taken = x/35
Average speed = 2x/x/35+x/25
Average speed = 175*2/12
Average speed = 29.16 km/h
Hence, the average speed for the entire journey is 29.16 km/h
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