Multiple choice general knowledge

A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?

  1. 3.6

  2. 7.2

  3. 8.4

  4. 10
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Speed = Distance/Time. The person covers 600 m in 5 minutes. First convert to km/hr: 600 m = 0.6 km, and 5 minutes = 5/60 = 1/12 hours. Speed = 0.6 / (1/12) = 0.6 × 12 = 7.2 km/hr. Alternatively, 600 m in 5 minutes means 120 m per minute, which is 7.2 km/hr (120 × 60 / 1000). The key is consistent unit conversion.

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