If a runner completes a 10 km race in 50 minutes, what is his speed in km/h?

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Question: If a runner completes a 10 km race in 50 minutes, what is his speed in km/h?

Options:

Correct Answer: 12 km/h

Solution:

Speed = Distance / Time = 10 km / (50/60) h = 12 km/h.

If a runner completes a 10 km race in 50 minutes, what is his speed in km/h?

If a runner completes a 10 km race in 50 minutes, what is his speed in km/h?

Step 1: Identify the distance of the race, which is 10 km.
Step 2: Identify the time taken to complete the race, which is 50 minutes.
Step 3: Convert the time from minutes to hours. Since there are 60 minutes in an hour, divide 50 by 60. This gives you 50/60 hours.
Step 4: Calculate the speed using the formula: Speed = Distance / Time.
Step 5: Substitute the values into the formula: Speed = 10 km / (50/60) h.
Step 6: Simplify the calculation: Speed = 10 km / (50/60) = 10 km * (60/50).
Step 7: Calculate the final speed: Speed = 10 * 1.2 = 12 km/h.

Speed Calculation – Understanding how to calculate speed using the formula Speed = Distance / Time.
Unit Conversion – Converting time from minutes to hours to ensure consistent units in the speed calculation.