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A person walks at 4 km/h and runs at 10 km/h. If he walks for 30 minutes and then runs for 30 minutes, what is his average speed?

Practice Questions

1 question
Q1
A person walks at 4 km/h and runs at 10 km/h. If he walks for 30 minutes and then runs for 30 minutes, what is his average speed?
  1. 6 km/h
  2. 7 km/h
  3. 8 km/h
  4. 9 km/h

Questions & Step-by-step Solutions

1 item
Q
Q: A person walks at 4 km/h and runs at 10 km/h. If he walks for 30 minutes and then runs for 30 minutes, what is his average speed?
Solution: Total distance = (4 × 0.5) + (10 × 0.5) = 2 + 5 = 7 km. Total time = 1 hour. Average speed = 7 km/h.
Steps: 0

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