A person walks 4 km in 1 hour and then runs 8 km in 30 minutes. What is the aver

A person walks 4 km in 1 hour and then runs 8 km in 30 minutes. What is the average speed for the entire journey? (2023)

A person walks 4 km in 1 hour and then runs 8 km in 30 minutes. What is the average speed for the entire journey? (2023)

Step 1: Calculate the total distance traveled. The person walks 4 km and then runs 8 km. So, total distance = 4 km + 8 km.
Step 2: Add the distances together. Total distance = 4 km + 8 km = 12 km.
Step 3: Calculate the total time taken. The person walks for 1 hour and runs for 30 minutes. Convert 30 minutes to hours: 30 minutes = 0.5 hours.
Step 4: Add the times together. Total time = 1 hour + 0.5 hours = 1.5 hours.
Step 5: Calculate the average speed. Use the formula: Average speed = Total distance / Total time.
Step 6: Plug in the values. Average speed = 12 km / 1.5 hours.
Step 7: Perform the division. Average speed = 8 km/h.

Average Speed Calculation – The average speed is calculated by dividing the total distance traveled by the total time taken.
Unit Conversion – Understanding the need to convert time into consistent units (hours in this case) for accurate calculations.