Multiple choice

A man walks on a straight road from his home to a market $2.5km$ away with a speed of $5km/h$. Finding the market closed, he instantly turns and walks back home with a speed of $7.5km/hr$. If the total time of travel is $40min$ find the average speed of the man for the whole journey

  1. 6

  2. 5

  3. 4

  4. 2
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A Correct answer
AI explanation

The average speed for the entire journey is the total distance traveled divided by the total time taken. The total distance for the trip to the market and back is 5 km, and converting 40 minutes to hours gives 2/3 hr. Dividing 5 km by 2/3 hr yields an average speed of 6 km/hr.

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