Multiple choice

Swami has a bike rental shop. On a particular day, 3 friends, Amar, Akbar and Anthony rent out bikes from his shop at the same time in the morning and return it together at the same time in the evening. On reading the meters, Swami realises that the 3 friends had driven their bikes at average speeds of 40kmph, 50 kmph and 60 kmph respectively. Find their average speed.

  1. 50 kmph

  2. 48 kmph

  3. 45 kmph

  4. 40 kmph
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A Correct answer
AI explanation

Assume the total time driven is T hours, meaning the distances covered by Amar, Akbar, and Anthony are 40T, 50T, and 60T kilometers respectively. The total distance covered by all three is the sum of these values, which is 150T kilometers. Their combined average speed is the total distance divided by the total time traveled by all three friends, calculated as 150T divided by 3T, resulting in 50 kmph.

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