Question
Pipe ‘A’ and pipe ‘B’ can fill a cistern in 18
minutes and 16 minutes respectively. Pipe ‘C’ alone can empty the cistern in 12 minutes. If all three pipes are opened together then what is the time taken to fill 50% of the cistern?Solution
Let the capacity of the cistern = 144 units Then, efficiency of pipe ‘A’ = 144/18 = 8 units/minute Efficiency of pipe ‘B’ = 144/16 = 9 units/minute Efficiency of pipe ‘C’ = 144/12 = 12 units/minute So, combined efficiency of pipes ‘A’, ‘B’ and ‘C’ = 8 + 9 – 12 = 5 units/minute 50% of the cistern’s capacity = 72 units Therefore, time taken by all 3 pipes together to fill 50% of the cistern = 72/5 = 14.4 minutes
1) Patience implies the quietness or self-possession of one’s own spirit under suffering and provocation.
2) This is because at times anger...
According to the author rupee is not the only currency that is losing its value against dollar. How does this fact affect India?
Find the appropriate word.
Fill in blank 3 with the appropriate word from the options.
Find the appropriate word.
Fill in blank 48 with the most appropriate word.
Find the appropriate word.
Which of the following are the conditions that are mentioned in the passage that would force a large number of people to migrate by 2050?
(i) ris...
Find the appropriate word.
Select the most appropriate option to fill in blank.
