If you walk from your home to Grandmother’s house, which is 6 km away, at a steady speed of 3 km/h, and take a 10‑minute break halfway, how many minutes will it take to reach the house?
Answer
130 minutes
The correct answer is 130 minutes — Add the break time: 120 minutes + 10 minutes = 130 minutes.
Step-by-step solution
- Compute walking time: distance ÷ speed = 6 km ÷ 3 km/h = 2 h = 120 minutes.
- Add the break time: 120 minutes + 10 minutes = 130 minutes.
Common mistake: Adding speed to the time instead of adding the break
Concept tested: Time calculation for walking with break
Published · How this solution was prepared and checked
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