Question
Pipes P and Q can fill a tank in 12 hours and 15 hours
respectively, while a third pipe C can empty the tank in 24 hours. If all three pipes are opened simultaneously at 4:00 a.m., at what time will the tank be 65% full?Solution
Let the capacity of the tank be 120 units
Efficiency of pipe ‘A’ = 120/12 = 10 units/hour
Efficiency of pipe ‘B’ = 120/15 = 8 units/hour
Efficiency of pipe ‘C’ = 120/24 = 5 units/hour
Tank filled in 1 hour = 10 + 8 – 5 = 13 units
Time taken to fill 65% of the tank = 0.65 × 120/13 = 6 hours
Therefore, tank will get filled at (4 + 6) = 10 a.m.
- In each sentence below, four words have been printed in bold which are numbered (1), (2), (3), and (4). One of these words may be misspelt or inappropriate...
In the following question, four words are given, out of which only one word is correctly spelt. Find the correctly spelt word.
The political retoric of foreign aggression is backed up by very brisk policing at home.
...Four words are given, out of which only one word is spelt correctly. Choose the correctly spelt word and click the button corresponding to it.
(a) Tariff (b) Tarriff
(c) Tarif (d) Tarrif
In each question below, four words printed in bold type are given. One word printed in bold might either be wrongly spelt or inappropriate in the conte...
Choose the word with the correct spelling.
Choose the correct spelling from the options given.
In the following sentence, four words or phrases have been highlighted. One of them is incorrect. Choose the INCORRECT word or phrase from the given opt...
- In each of the questions below, a sentence is given with four words highlighted in bold in the sentence. Among these bold words one may be wrongly spelt. T...
Relevant for Exams:
