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A person walks 5 km in 1 hour and then runs 10 km in 1 hour. What is the average

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Question: A person walks 5 km in 1 hour and then runs 10 km in 1 hour. What is the average speed for the entire journey? (2022)

Options:

  1. 7.5 km/h
  2. 8 km/h
  3. 8.5 km/h
  4. 9 km/h

Correct Answer: 7.5 km/h

Exam Year: 2022

Solution: 

Total distance = 5 km + 10 km = 15 km. Total time = 1 hour + 1 hour = 2 hours. Average speed = Total distance / Total time = 15 km / 2 hours = 7.5 km/h.

A person walks 5 km in 1 hour and then runs 10 km in 1 hour. What is the average

Practice Questions

Q1
A person walks 5 km in 1 hour and then runs 10 km in 1 hour. What is the average speed for the entire journey? (2022)
  1. 7.5 km/h
  2. 8 km/h
  3. 8.5 km/h
  4. 9 km/h

Questions & Step-by-Step Solutions

A person walks 5 km in 1 hour and then runs 10 km in 1 hour. What is the average speed for the entire journey? (2022)
  • Step 1: Calculate the total distance traveled. The person walks 5 km and then runs 10 km. So, total distance = 5 km + 10 km.
  • Step 2: Add the distances together. Total distance = 5 km + 10 km = 15 km.
  • Step 3: Calculate the total time taken. The person walks for 1 hour and runs for 1 hour. So, total time = 1 hour + 1 hour.
  • Step 4: Add the times together. Total time = 1 hour + 1 hour = 2 hours.
  • Step 5: Calculate the average speed. Average speed = Total distance / Total time.
  • Step 6: Substitute the values into the formula. Average speed = 15 km / 2 hours.
  • Step 7: Perform the division. Average speed = 7.5 km/h.
  • Average Speed – Average speed is calculated by dividing the total distance traveled by the total time taken.
  • Distance and Time Calculation – Understanding how to sum distances and times correctly is crucial for solving average speed problems.
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