A bus is running at a speed of 60 km/h to cover a distance in 50 minutes. To reduce the time of the journey to 20 min , at what speed (in km/h) should - Quantitative Aptitude MCQ Competitive Exam 2026 | ExamTest.live

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A bus is running at a speed of 60 km/h to cover a distance in 50 minutes. To reduce the time of the journey to 20 min, at what speed (in km/h) should the bus run?

Solution & Step-by-step Explanation

Since the distance covered remains constant, speed and time are inversely proportional: S_{1} \times T_{1} = S_{2} \times T_{2} Given: S_{1} = 60 km/h T_{1} = 50 minutes T_{2} = 20 minutes S_{2} = ? Substituting the values: 60 \times 50 = S_{2} \times 20 3000 = S_{2} \times 20 S_{2} = \frac{3000}{20} = 150 km/h Thus, the bus should run at a speed of 150 km/h .

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A bus is running at a speed of 60 km/h to cover a distance in 50 minutes. To reduce the time of the journey to 20 min, at what speed (in km/h) should the bus run?

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