Question
A boat can travel 10 km more in downstream than that in
upstream, in 5 hours while the difference between the time taken by the same boat to travel 250 km and 126 km, in still water, is 4 hours. Find the approximate time taken by the boat to travel 233 km in downstream and 100 km in upstream.Solution
Let the speed of boat in still water and speed of stream be 'x' km/hr and 'y' km/hr, respectively. According to question; (250/x) - (126/x) = 4 Or, (124/x) = 4 So, x = 31 Now, 5 x (31 + y) = 5 x (31 - y) + 10 Or, 155 + 5y = 155 - 5y + 10 Or, 10y = 10 So, y = 1 So, downstream speed of the boat = (31 + 1) = 32 km/hr And, upstream speed of the boat = (31 - 1) = 30 km/hr Required time taken = (233/32) + (100/30) ~ (7 + 3) ~ 10 hours
- In each of the following questions, a statement is given with a single blank. Choose the most suitable option which fits the blank in the most meaningful a...
It dates from the 11th century, and once belonged to the Ogilvies, from ____________ it passed in 1535 to the Gordons.
(A) The success of the new project was largely attributed to the team’s _____________ in overcoming unforeseen challenges.
(B) The audit report...
A ____________ of sadness began to _________ over me,when suddenly I was __________ to hear a voice.
With an ___________ to reduce the number of road accidents, the West Bengal government has _____________ to increase traffic violation fines as per the ...
In the question given below, two sentences are given with one blank each. From the given options, choose the word that correctly fits both sentences.
The court ________ cognisance of the criminal's words. Â
I.The air was so still that there was hardly a ………. on the pond’s surface.
II.When she heard the news, a ………. of excitement passed ...
Drink ____ of liquids ____ the day even if you don’t feel thirsty.
Select the most appropriate option to fill in the blank.
The committee’s suggestion was not acceptable to everyone as it was ______.
Relevant for Exams:
