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Question 30:
A motorcyclist drives from place A to B with a uniform speed of 30 km h-1 and returns from place B to A with a uniform speed of 20 km h-1. Find his average speed?
A motorcyclist drives from place A to B with a uniform speed of 30 km h-1 and returns from place B to A with a uniform speed of 20 km h-1. Find his average speed?
Most Upvoted Answer
Question 30:A motorcyclist drives from place A to B with a uniform spe...
Analysis:
To find the average speed of the motorcyclist, we need to consider the total distance traveled and the total time taken for the entire round trip.
Given data:
- Speed from A to B = 30 km/h
- Speed from B to A = 20 km/h
Calculations:
Let the distance between A and B be D km.
- Time taken to travel from A to B = D/30 hours
- Time taken to travel from B to A = D/20 hours
Total time taken for the round trip = D/30 + D/20 hours
Total distance traveled = 2D km (to and fro)
Average speed = Total distance / Total time
Therefore, Average speed = 2D / (D/30 + D/20) = (2*30*20) / (20+30) = 1200 / 50 = 24 km/h
Conclusion:
The average speed of the motorcyclist for the round trip is 24 km/h.
To find the average speed of the motorcyclist, we need to consider the total distance traveled and the total time taken for the entire round trip.
Given data:
- Speed from A to B = 30 km/h
- Speed from B to A = 20 km/h
Calculations:
Let the distance between A and B be D km.
- Time taken to travel from A to B = D/30 hours
- Time taken to travel from B to A = D/20 hours
Total time taken for the round trip = D/30 + D/20 hours
Total distance traveled = 2D km (to and fro)
Average speed = Total distance / Total time
Therefore, Average speed = 2D / (D/30 + D/20) = (2*30*20) / (20+30) = 1200 / 50 = 24 km/h
Conclusion:
The average speed of the motorcyclist for the round trip is 24 km/h.
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Question 30:A motorcyclist drives from place A to B with a uniform speed of 30 km h-1 and returns from place B to A with a uniform speed of 20 km h-1. Find his average speed?
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Question 30:A motorcyclist drives from place A to B with a uniform speed of 30 km h-1 and returns from place B to A with a uniform speed of 20 km h-1. Find his average speed? 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 30:A motorcyclist drives from place A to B with a uniform speed of 30 km h-1 and returns from place B to A with a uniform speed of 20 km h-1. Find his average speed? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Question 30:A motorcyclist drives from place A to B with a uniform speed of 30 km h-1 and returns from place B to A with a uniform speed of 20 km h-1. Find his average speed?.
Question 30:A motorcyclist drives from place A to B with a uniform speed of 30 km h-1 and returns from place B to A with a uniform speed of 20 km h-1. Find his average speed? 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 30:A motorcyclist drives from place A to B with a uniform speed of 30 km h-1 and returns from place B to A with a uniform speed of 20 km h-1. Find his average speed? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Question 30:A motorcyclist drives from place A to B with a uniform speed of 30 km h-1 and returns from place B to A with a uniform speed of 20 km h-1. Find his average speed?.
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