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Question 38:
The distance between Delhi and Agra is 200 km. A train travels the first 100 km at a speed of 50 km/h. How fast must the train travel the next 100 km, so as to average 70 km/h for the whole journey ?
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Question 38:The distance between Delhi and Agra is 200 km. A train tra...
Calculating the required speed to average 70 km/h for the whole journey:

Given data:
- Distance between Delhi and Agra: 200 km
- Speed for first 100 km: 50 km/h
- Required average speed for the whole journey: 70 km/h

Calculating the time taken for the first 100 km:
- Time = Distance / Speed
- Time taken for first 100 km = 100 km / 50 km/h = 2 hours

Calculating the time taken for the whole journey:
- Total time = 200 km / 70 km/h = 2.86 hours

Calculating the remaining distance to be covered:
- Remaining distance = Total distance - Distance covered in the first 100 km = 200 km - 100 km = 100 km

Calculating the required speed for the remaining 100 km:
- Required speed = Remaining distance / Remaining time
- Required speed = 100 km / (2.86 hours - 2 hours) = 100 km / 0.86 hours = 116.28 km/h
Therefore, the train must travel at a speed of 116.28 km/h for the next 100 km in order to average 70 km/h for the whole journey.
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Question 38:The distance between Delhi and Agra is 200 km. A train travels the first 100 km at a speed of 50 km/h. How fast must the train travel the next 100 km, so as to average 70 km/h for the whole journey ?
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Question 38:The distance between Delhi and Agra is 200 km. A train travels the first 100 km at a speed of 50 km/h. How fast must the train travel the next 100 km, so as to average 70 km/h for the whole journey ? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Question 38:The distance between Delhi and Agra is 200 km. A train travels the first 100 km at a speed of 50 km/h. How fast must the train travel the next 100 km, so as to average 70 km/h for the whole journey ? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Question 38:The distance between Delhi and Agra is 200 km. A train travels the first 100 km at a speed of 50 km/h. How fast must the train travel the next 100 km, so as to average 70 km/h for the whole journey ?.
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