Question
A pipe fills a tank in 20 hours, and another pipe
empties it in 30 hours. If both pipes are opened together, how long will it take to fill the tank?Solution
The rate of the filling pipe is 1/20. The rate of the emptying pipe is 1/30. Net rate = (1/20 - 1/30) = 1/60. Time taken = 60 hours. Correct Option: d) 60 hours
In the sentence marked as (6) in the passage, find out an error, if there is any. If there is no error, mark option 5, ‘No error’ as the answer.
Choose the most appropriate option for blank no. 5
Fill the blank 2.
The Prime Minister ___________ that the country could only _______ economically if planners had a clear _______ of rural development in the context of g...
Fill in the blank with the most appropriate word.
Find the appropriate word for Blank 1.
Fill in blank 6 with the appropriate word from the options.
Find the appropriate word.
1) purchase            2) gain                3) acquisition           4) obtainment     5) seizing
...Find the appropriate word.
Relevant for Exams:
