NEET Exam > NEET Questions > A car is moving on a straight road covers one...
Start Learning for Free
A car is moving on a straight road covers one third of the distance with a speed of 20km/h and the rest with a speed of 60km/h. The average speed of the car is? (a) 40km/h. (b) 50km/h (c) 36 km/h (d) 55km/h Crct ans is opt.C. Explain.?
Most Upvoted Answer
A car is moving on a straight road covers one third of the distance wi...
Community Answer
A car is moving on a straight road covers one third of the distance wi...
Solution:
Given, the car covers one-third of the distance at a speed of 20 km/h and the rest of the distance at a speed of 60 km/h.
Let the total distance be D.
Then, the distance covered at 20 km/h = (1/3)D
The distance covered at 60 km/h = (2/3)D
Time taken to cover the distance at 20 km/h = (1/3D) / 20 = (1/60) hours
Time taken to cover the distance at 60 km/h = (2/3D) / 60 = (1/90) hours
Total time taken to cover the distance = (1/60) + (1/90) = (1/36) hours
Average speed = Total distance / Total time taken
= D / (1/36)
= 36D km/h
Therefore, the average speed of the car is 36 km/h.
Hence, the correct option is (c) 36 km/h.
Given, the car covers one-third of the distance at a speed of 20 km/h and the rest of the distance at a speed of 60 km/h.
Let the total distance be D.
Then, the distance covered at 20 km/h = (1/3)D
The distance covered at 60 km/h = (2/3)D
Time taken to cover the distance at 20 km/h = (1/3D) / 20 = (1/60) hours
Time taken to cover the distance at 60 km/h = (2/3D) / 60 = (1/90) hours
Total time taken to cover the distance = (1/60) + (1/90) = (1/36) hours
Average speed = Total distance / Total time taken
= D / (1/36)
= 36D km/h
Therefore, the average speed of the car is 36 km/h.
Hence, the correct option is (c) 36 km/h.
Attention NEET Students!
To make sure you are not studying endlessly, EduRev has designed NEET study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in NEET.
|
Explore Courses for NEET exam
|
|
Similar NEET Doubts
Top Courses for NEETView all
A car is moving on a straight road covers one third of the distance with a speed of 20km/h and the rest with a speed of 60km/h. The average speed of the car is? (a) 40km/h. (b) 50km/h (c) 36 km/h (d) 55km/h Crct ans is opt.C. Explain.?
Question Description
A car is moving on a straight road covers one third of the distance with a speed of 20km/h and the rest with a speed of 60km/h. The average speed of the car is? (a) 40km/h. (b) 50km/h (c) 36 km/h (d) 55km/h Crct ans is opt.C. Explain.? 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 is moving on a straight road covers one third of the distance with a speed of 20km/h and the rest with a speed of 60km/h. The average speed of the car is? (a) 40km/h. (b) 50km/h (c) 36 km/h (d) 55km/h Crct ans is opt.C. Explain.? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A car is moving on a straight road covers one third of the distance with a speed of 20km/h and the rest with a speed of 60km/h. The average speed of the car is? (a) 40km/h. (b) 50km/h (c) 36 km/h (d) 55km/h Crct ans is opt.C. Explain.?.
A car is moving on a straight road covers one third of the distance with a speed of 20km/h and the rest with a speed of 60km/h. The average speed of the car is? (a) 40km/h. (b) 50km/h (c) 36 km/h (d) 55km/h Crct ans is opt.C. Explain.? 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 is moving on a straight road covers one third of the distance with a speed of 20km/h and the rest with a speed of 60km/h. The average speed of the car is? (a) 40km/h. (b) 50km/h (c) 36 km/h (d) 55km/h Crct ans is opt.C. Explain.? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A car is moving on a straight road covers one third of the distance with a speed of 20km/h and the rest with a speed of 60km/h. The average speed of the car is? (a) 40km/h. (b) 50km/h (c) 36 km/h (d) 55km/h Crct ans is opt.C. Explain.?.
Solutions for A car is moving on a straight road covers one third of the distance with a speed of 20km/h and the rest with a speed of 60km/h. The average speed of the car is? (a) 40km/h. (b) 50km/h (c) 36 km/h (d) 55km/h Crct ans is opt.C. Explain.? in English & in Hindi are available as part of our courses for NEET.
Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of A car is moving on a straight road covers one third of the distance with a speed of 20km/h and the rest with a speed of 60km/h. The average speed of the car is? (a) 40km/h. (b) 50km/h (c) 36 km/h (d) 55km/h Crct ans is opt.C. Explain.? defined & explained in the simplest way possible. Besides giving the explanation of
A car is moving on a straight road covers one third of the distance with a speed of 20km/h and the rest with a speed of 60km/h. The average speed of the car is? (a) 40km/h. (b) 50km/h (c) 36 km/h (d) 55km/h Crct ans is opt.C. Explain.?, a detailed solution for A car is moving on a straight road covers one third of the distance with a speed of 20km/h and the rest with a speed of 60km/h. The average speed of the car is? (a) 40km/h. (b) 50km/h (c) 36 km/h (d) 55km/h Crct ans is opt.C. Explain.? has been provided alongside types of A car is moving on a straight road covers one third of the distance with a speed of 20km/h and the rest with a speed of 60km/h. The average speed of the car is? (a) 40km/h. (b) 50km/h (c) 36 km/h (d) 55km/h Crct ans is opt.C. Explain.? theory, EduRev gives you an
ample number of questions to practice A car is moving on a straight road covers one third of the distance with a speed of 20km/h and the rest with a speed of 60km/h. The average speed of the car is? (a) 40km/h. (b) 50km/h (c) 36 km/h (d) 55km/h Crct ans is opt.C. Explain.? tests, examples and also practice NEET tests.
|
|
Explore Courses for NEET exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup