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1. A person crosses a 600m long street in 5 minutes. What is his speed in km per hour ?
- A. 3.6
- B. 3.6
- C. 3.6
- D. 3.6
Answer: Option B
Explanation:
Hints : distance = 680 meter ; time = 5 minutes = 5 × 60 seconds = 300 seconds
speed = distance / time = 600/300 = 2m/s = 2 × 18/5 km/hr = 7.2 km/hr
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