Question
A boat can travel 42 km downstream in 60 min. The ratio
of the speed of the boat in still water to the speed of the stream is 5: 2. How much time will the boat take to cover 21 km upstream?Solution
Speed of downstream = D/T = 42 × (60/60) = 42 km/hr The ratio of the speed of the boat in still water to the speed of the stream = 5: 2 (5x, 2x) => 7x = 42 => x = 6 Speed of upstream = 5x – 2x = 3x = 18 km/hr Distance = 21 km Time = D/S = 21/18 = 1(1/6) hr = 1 hour 10 min
Damodar Mauzo has received the prestigious Jnanpith Award, the country's highest literary honor.He belongs to which state?
What distinguishes the Tamil Nadu government’s upcoming Centre of Excellence with an AI lab?
Which of the following is not a cloud storage service device?
A Bar Code Reader is an example of _________
Which type of virus embeds itself in computer memory, making detection challenging?
India and Bangladesh agreed to make select land ports operational 24/7. This initiative aims to facilitate exports to which countries through Bangladesh...
Which of the following is the largest storage?
Hard disk are organized asÂ
In a Window-based computer, two files cannot be in the same folder if?Â
A program that converts high-level language code into machine language is called a _______. Â
Relevant for Exams:
