Quantitative Aptitude • Time, Speed & WorkEasy
A car covers 378 km in 3 hours. What is its speed in metres per second?
A. 35 m/s✓ Correct Answer
B. 126 m/s
C. 70 m/s
D. 453.6 m/s
💡 Solution & Explanation
Speed = distance ÷ time = 378 ÷ 3 = 126 km/h. To change km/h into m/s, multiply by 5/18 (because 1 km = 1,000 m and 1 hour = 3,600 seconds). So 126 × 5/18 = 35 m/s.
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