Question
A boat can cover 40 km upstream and 60 km downstream in
13 hour. Also it can cover 50 km upstream and 72 km downstream in 16 hour. Find the speed of boat in still water.Solution
Let upstream speed = a And downstream speed = b Now, => 40/a + 60/b = 13 ------- (i) And, => 50/a + 72/b = 16 ------- (ii) Solving (i) and (ii) we get, => a = 12 and b = 5 Speed of boat in still water = (a + b)/2 = (12 + 5)/2 = 8.5 kmph
Who is central vigilance commissioner in as of November 2023?
Which country won the 2018 FIH Men’s Hockey World Cup?
Which is the supreme institution of law in India?
Who authored the book "An Uncommon Love: The Early Life of Sudha and Narayana Murthy," offering an intimate portrayal of Infosys co-founders Sudha and N...
According to the 2011 census, which Union territory is the sexiest year?
Identify an anomaly element that belongs to both group 1 and group 17.
Which of the following institutions started the 'Team Halo' initiative in November 2020?
In 1962, who published 'The History of Ocean Basins', which outlined the theory of how tectonic plates could move, later called 'sea floor spreading'?
What is the objective of the Annual Mass Drug Administration (MDA) Campaign recently launched by the Uttar Pradesh government, and when is it scheduled ...
The Reserve Bank of India was established in:
Relevant for Exams:
