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If a person runs 10 km in 50 minutes, what is his speed in km/h? (2020)
If a person runs 10 km in 50 minutes, what is his speed in km/h? (2020)
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Practice Questions
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Q1
If a person runs 10 km in 50 minutes, what is his speed in km/h? (2020)
10 km/h
12 km/h
14 km/h
15 km/h
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Speed = Distance / Time = 10 km / (50/60) hours = 10 km / (5/6) hours = 12 km/h.
Questions & Step-by-step Solutions
1 item
Q
Q: If a person runs 10 km in 50 minutes, what is his speed in km/h? (2020)
Solution:
Speed = Distance / Time = 10 km / (50/60) hours = 10 km / (5/6) hours = 12 km/h.
Steps: 8
Show Steps
Step 1: Identify the distance run, which is 10 km.
Step 2: Identify the time taken, 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: Simplify 50/60 to 5/6 hours.
Step 5: Use the formula for speed, which is Speed = Distance / Time.
Step 6: Substitute the values into the formula: Speed = 10 km / (5/6) hours.
Step 7: To divide by a fraction, multiply by its reciprocal. So, Speed = 10 km * (6/5).
Step 8: Calculate the speed: 10 * 6 = 60, and then divide by 5, which gives you 12 km/h.
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