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
Which of the following best describes a "software process"?
What does DMA stand for?
Which phase of the software process involves understanding the customer's needs and defining the system's functionalities?
A cloud app experiences sudden spikes for a short period (10–15 seconds). Traditional CPU-based auto-scaling is too slow. Which method is MOST effecti...
Which Software Development Life Cycle (SDLC) model is best suited for projects with unclear requirements that are expected to evolve over time?
Which is not a software development life cycle phase?
What is refactoring?
What does black-box testing focus on?
In the Waterfall model of SDLC, what is the characteristic relationship between phases?
Which SDLC model is best suited for large and complex projects with evolving requirements?
Relevant for Exams:
