Question
Pipe ‘A’ and pipe ‘B’ can fill a cistern in 18
minutes and 20 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 = 180 units Then, efficiency of pipe ‘A’ = 180/18 = 10 units/minute Efficiency of pipe ‘B’ = 180/20 = 9 units/minute Efficiency of pipe ‘C’ = 180/12 = 15 units/minute So, combined efficiency of pipes ‘A’, ‘B’ and ‘C’ = 10 + 9 – 15 = 4 units/minute 50% of the cistern’s capacity = 90 units Therefore, time taken by all 3 pipes together to fill 50% of the cistern = 90/4 = 22.5 minutes
Fill in the blank/s with suitable Word/s:
The researchers plan to _________ their findings and _________ a report for publication.
Fill the blank with the most appropriate word.
The principal wanted to meet me _____________theft in the school .
Fill blank number 29 with correct option:
I opened the bag and packed the boots in; and then, just as I was ______ to close it, a horrible idea ________ to me.
In the question below, a sentence is given with two words missing. You are given five options containing a pair of words that can fill the blanks makin...
China apart, all major countries have at least __________________ considered the step of converting the state into two Union territories and how this wa...
The outcome of the meeting was beyond what we expected as it _______________positive result in the form of an assurance that the ______________proposals...
Select the most appropriate option to fill in the blank.
The government should take steps to ______ pollution.
They were ________________ by nature with a strong work ethic and a firm belief in self-sufficiency.
Despite the uninspiring weather, the city was ……….. with a youthful ………..
Relevant for Exams:
