Question
Two pipes 'A' and 'B' can fill a tank in 15 minutes and
20 minutes respectively. Both the pipes are opened together but after 4 minutes, pipe 'A' is turned off. What is the total time required to fill the tank?Solution
Amount of water filled by pipe A in one minute = 1/15 Amount of water filled by pipe B in one minute = 1/20 So, both pipes were opened for 4 minutes. So, the amount of water filled by both pipes in 4 minutes = 4* (1/15+ 1/20) = 7/15 So, remaining amount = 8/15 Now, pipe A is turned off, So, this will be filled by pipe B. let's say in x minutes So, x*(1/20) = 8/15 X = 32/3 minutes it means 10 minutes 40 seconds So, total time taken = 4 minutes + 10 minutes 40 seconds = 14 minutes 40 seconds
When the detection of a new highly-transmissible coronavirus variant , ‘Omicron’ in South Africa and the threat of a third wave of the pandemic bec...
In the following question, some parts of the sentence have been highlighted. You need to identify which of the given option can both grammatically and ...
The elephant reached the outskirts of the town broken a fences down like matchsticks.
A market-driven approaching for provide district hospital beds for only those with the means would defeat the objective.
...The burden of fixed monthly charges and fuel cost adjustment will be born by state government
More than 100 police officers were being deployed at the venue , along with an armed posse from the Police.
Of the four given options, choose the most appropriate one.
In consonance in the goal of provide  h ealth for all under the National Health Policy, care should be universal, and free at the point of delivery.<...
I. The civic body, which had to fill potholes on nearly 14,000 km of road by September 30, has been granted a reprieve.
II. The loads from the ho...
Which of the phrases a, b, c, and d given below in each sentence should replace the word/phrase printed in bold in the sentence to make it grammaticall...
Relevant for Exams:
