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
A boat covers 35 km downstream in 2 h and covers the same distance upstream in 7 h.
Find the speed (in km/h) of the boat in still water.
11.25
28.75
18.25
10.55
- The boat covers 35 km downstream in 2 hours. So, downstream speed = 35 km / 2 hours = 17.5 km/h.
- The boat covers the same 35 km upstream in 7 hours. So, upstream speed = 35 km / 7 hours = 5 km/h.
- Let 'b' be the speed of the boat in still water, and 'r' be the speed of the current.
- Downstream speed = (b + r) = 17.5 km/h.
- Upstream speed = (b - r) = 5 km/h.
- Add the equations to solve for 'b':
- (b + r) + (b - r) = 17.5 + 5
- 2b = 22.5
- b = 11.25 km/h
- Correct Answer: Option 1, 11.25 km/h
Report error
Access to prime resources