Aakash travels with a speed of 40 kmph by bus for 2 hours and then takes an auto which travels at 60 kmph for another 2 hours. Find his average speed (in kmph) for entire journey.
Explanation:
Average speed =total distancetotal time=40×2+60×24=2004=50kmph
Alternately,
When time is constant average speed = Arithmetic mean of speeds = (40 + 60)/2 = 50kmph
Hence, option (a).
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