send mail to support@abhimanu.com mentioning your email id and mobileno registered with us! if details not recieved
Resend Opt after 60 Sec.
By Loging in you agree to Terms of Services and Privacy Policy
Claim your free MCQ
Please specify
Sorry for the inconvenience but we’re performing some maintenance at the moment. Website can be slow during this phase..
Please verify your mobile number
Login not allowed, Please logout from existing browser
Please update your name
Subscribe to Notifications
Stay updated with the latest Current affairs and other important updates regarding video Lectures, Test Schedules, live sessions etc..
Your Free user account at abhipedia has been created.
Remember, success is a journey, not a destination. Stay motivated and keep moving forward!
Refer & Earn
Enquire Now
My Abhipedia Earning
Kindly Login to view your earning
Support
Type your modal answer and submitt for approval
If a person travels a certain distance at a speed of 10 km/h, and returns through the same route at a speed of 20 km/h, then
what will be the average speed during the whole journey?
40/3 km/h
15 km/h
10/3 km/h
20/3 km/h
- Total Distance: If the one-way distance is D km, the total distance for the round trip is 2D km.
- Time for First Part: Traveling at 10 km/h for distance D takes D/10 hours.
- Time for Return Part: Traveling back at 20 km/h for distance D takes D/20 hours.
- Total Time: Sum of both parts is D/10 + D/20 = (3D/20) hours.
- Average Speed Calculation: Average speed is total distance divided by total time = 2D/(3D/20) = 40/3 km/h.
- Option 1: 40/3 km/h - Correct Answer
- Option 2: 15 km/h - Incorrect, average speed formula results in 40/3.
- Option 3: 10/3 km/h - Incorrect, does not match correct calculation.
- Option 4: 20/3 km/h - Incorrect, this is not what the calculation yields.
Report error
Access to prime resources