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प्रश्न
A train travels with a speed of 20 m/s in the first 10 minutes, goes 8.5 kms in the next 10 minutes, 11 kms in the next 10 minutes, 8.5 kms in the next 10 and 6 kms in the next 10 minutes. What is the average speed of the train in kilometer per hour for the journey described?
पर्याय
42 km ph
35.8 km ph
55.2 km ph
46 km ph
MCQ
उत्तर
55.2 km ph
Explanation:
Total Distance = (12+8.5+11 8.5+6) = 46 km
Total Time = 50 min
Average speed`=(46xx60)/50` = 55.2 km/hr
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Time, Speed and Distance (Entrance Exam)
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