A marathon runner completes a race in 3 hours and 15 minutes. What is his averag

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Question: A marathon runner completes a race in 3 hours and 15 minutes. What is his average speed in km/h if the marathon distance is 42 km? (2022)

Options:

12.5 km/h
13 km/h
14 km/h
15 km/h

Correct Answer: 13 km/h

Exam Year: 2022

Solution:

Total time in hours = 3 + 15/60 = 3.25 hours. Average speed = Distance/Time = 42 km / 3.25 h = 12.92 km/h, which rounds to 13 km/h.

A marathon runner completes a race in 3 hours and 15 minutes. What is his averag

Practice Questions

A marathon runner completes a race in 3 hours and 15 minutes. What is his average speed in km/h if the marathon distance is 42 km? (2022)

12.5 km/h
13 km/h
14 km/h
15 km/h

Questions & Step-by-Step Solutions

A marathon runner completes a race in 3 hours and 15 minutes. What is his average speed in km/h if the marathon distance is 42 km? (2022)

Step 1: Convert the time from hours and minutes to just hours. The runner took 3 hours and 15 minutes.
Step 2: To convert 15 minutes to hours, divide 15 by 60 (since there are 60 minutes in an hour). This gives you 0.25 hours.
Step 3: Add the 3 hours to the 0.25 hours. So, 3 + 0.25 = 3.25 hours.
Step 4: Now, use the formula for average speed, which is Distance divided by Time. The distance of the marathon is 42 km.
Step 5: Plug in the numbers: Average speed = 42 km / 3.25 hours.
Step 6: Calculate the average speed. 42 divided by 3.25 equals approximately 12.92 km/h.
Step 7: Round 12.92 km/h to the nearest whole number, which is 13 km/h.

Time Conversion – Understanding how to convert minutes into hours for accurate calculations.
Average Speed Calculation – Using the formula for average speed, which is distance divided by time.

A marathon runner completes a race in 3 hours and 15 minutes. What is his averag

What’s inside this PDF?

A marathon runner completes a race in 3 hours and 15 minutes. What is his averag

Practice Questions

Questions & Step-by-Step Solutions

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