Question
Select the most appropriate meaning of the bold idiom.
Students often burn the midnight oil to qualify for competitive examinations.Solution
The correct answer is C
Pipe C alone can empty a tank in 21 hours. Pipes A and B alone can fill the same tank in 7 hours and 14 hours, respectively. If pipes A and C are opened...
Pipe 'A' alone takes 16 minutes to fill half of the empty tank. Pipe 'B' is thrice as efficient as pipe 'A'. Find the percentage of the tank filled by ...
An inlet pipe can fill an empty tank in 36 minutes whereas an outlet pipe can empty the fully filled tank in 54 minutes. Find the time taken by both the...
An inlet pipe can fill an empty tank in 24 minutes whereas an outlet pipe can empty the fully filled tank in 36 minutes. Find the time taken by both the...
Time taken by pipe 'A' to fill a tank is 45 minutes. When both pipes 'A' and 'B' are opened together, the tank gets filled in 18 minutes. Find the time ...
Pipes A and B can fill a tank in 43.2 minutes and 108 minutes, respectively. Pipe C can empty it at 3 litres/minute. When all the three pipes are opened...
Pipe ‘X’ alone can fill a tank in 20 hours. When pipe ‘X’ and ‘Y’ are opened together, they can fill 60% of the same tank in 6 hours. Find t...
Pipe ‘A’ can fill a 120-litre tank in 15 hours. If pipe ‘A’ is 25% more efficient than pipe ‘C’ whereas pipe ‘B’ is 50% more efficient t...
Pipes ‘A’ and ‘B’ can fill a tank in 6 hours and 9 hours, respectively. If pipe ‘C’ is opened along with pipes ‘A’ and ‘B’, then the...
Pipe A can fill a tank in 45 minutes while pipe B can fill it in ____ minutes. There’s a leak in the tank which can empty it in _____minutes. When bot...
Relevant for Exams:
