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A car moving on straight road covers one third of a certain distance with 20km/h and rest with 60km/h. The average speed is-?
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A car moving on straight road covers one third of a certain distance w...
Calculation of Average Speed
To calculate the average speed of the car, we need to use the formula:
Average speed = Total Distance / Total Time
Calculation of Total Distance
Let's assume that the total distance that the car covers is 'd'. According to the problem, the car covers one-third of the distance with a speed of 20 km/h and the rest of the distance with a speed of 60 km/h.
Distance covered at 20 km/h = d/3
Distance covered at 60 km/h = 2d/3
Total distance covered = d/3 + 2d/3 = d
Therefore, the total distance covered by the car is 'd'.
Calculation of Total Time
To calculate the total time taken by the car, we need to use the formula:
Time = Distance / Speed
Time taken to cover d/3 distance at 20 km/h = (d/3) / 20 = d/60 hours
Time taken to cover 2d/3 distance at 60 km/h = (2d/3) / 60 = d/90 hours
Total time taken = (d/60) + (d/90) = 3d/180 + 2d/180 = 5d/180 = d/36 hours
Therefore, the total time taken by the car is 'd/36' hours.
Calculation of Average Speed
Average speed = Total Distance / Total Time
Average speed = d / (d/36)
Average speed = 36 km/h
Therefore, the average speed of the car is 36 km/h.
To calculate the average speed of the car, we need to use the formula:
Average speed = Total Distance / Total Time
Calculation of Total Distance
Let's assume that the total distance that the car covers is 'd'. According to the problem, the car covers one-third of the distance with a speed of 20 km/h and the rest of the distance with a speed of 60 km/h.
Distance covered at 20 km/h = d/3
Distance covered at 60 km/h = 2d/3
Total distance covered = d/3 + 2d/3 = d
Therefore, the total distance covered by the car is 'd'.
Calculation of Total Time
To calculate the total time taken by the car, we need to use the formula:
Time = Distance / Speed
Time taken to cover d/3 distance at 20 km/h = (d/3) / 20 = d/60 hours
Time taken to cover 2d/3 distance at 60 km/h = (2d/3) / 60 = d/90 hours
Total time taken = (d/60) + (d/90) = 3d/180 + 2d/180 = 5d/180 = d/36 hours
Therefore, the total time taken by the car is 'd/36' hours.
Calculation of Average Speed
Average speed = Total Distance / Total Time
Average speed = d / (d/36)
Average speed = 36 km/h
Therefore, the average speed of the car is 36 km/h.
Community Answer
A car moving on straight road covers one third of a certain distance w...
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A car moving on straight road covers one third of a certain distance with 20km/h and rest with 60km/h. The average speed is-?
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A car moving on straight road covers one third of a certain distance with 20km/h and rest with 60km/h. The average speed is-? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A car moving on straight road covers one third of a certain distance with 20km/h and rest with 60km/h. The average speed is-? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A car moving on straight road covers one third of a certain distance with 20km/h and rest with 60km/h. The average speed is-?.
A car moving on straight road covers one third of a certain distance with 20km/h and rest with 60km/h. The average speed is-? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A car moving on straight road covers one third of a certain distance with 20km/h and rest with 60km/h. The average speed is-? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A car moving on straight road covers one third of a certain distance with 20km/h and rest with 60km/h. The average speed is-?.
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