A car travels a certain journey at 40 km/h and an equal distance more at 60 km/h . The average speed for the whole journey is: - Quantitative Aptitude MCQ Competitive Exam 2026 | ExamTest.live

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A car travels a certain journey at 40 km/h and an equal distance more at 60 km/h . The average speed for the whole journey is:

Solution & Step-by-step Explanation

When a journey covers two equal distances at speeds v_{1} and v_{2}, the average speed is given by the harmonic mean formula: Average Speed = \frac{2 \cdot v _{1} \cdot v _{2}}{v _{1} + v _{2}} Given: v_{1} = 40 km/h v_{2} = 60 km/h Substitute the values: Average Speed = \frac{2 \times 40 \times 60}{40 + 60} Average Speed = \frac{4800}{100} = 48 km/h

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A car travels a certain journey at 40 km/h and an equal distance more at 60 km/h . The average speed for the whole journey is:

58 km/h

28 km/h

38 km/h

48 km/h

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