The day efficiency of Rajeev is equal to the one-day efficiency of Divya and Vivek together. Divya is 25% more efficient than Vivek and starts with 20% more of his efficiency with Vivek and works for x days, after that Divya left the work and remaining work will be completed by Vivek and Sanjay together in (x + 10) days. If ratio of work done by Divya and Vivek together to work done by Vivek and Sanjay is 5:7 and efficiency of Sanjay is 50% less than Vivek. Then Rajeev and Sanjay complete work together in how many days?
Ratio of efficiency of Divya: Vivek = 125:100 = 5: 4 Efficiency of Sanjay = 4 × (1/2) = 2 units/day According to question, (5 × (120/100) + 4) x / (4 + 2) (x + 10) = 5/7 10x / (6x + 60) = 5/7 70x – 30x = 300 x = 7.5days Total work = (10 × 7.5) + (6 × 17.5) = 75+105 = 180 ATQ-Rajeev efficiency = (Divya + Vivek) = 9 units/day Sanjay and Rajeev efficiency = (2 + 9) = 11 units/day (Sanjay + Rajeev) = 180/11 days
Which of the following is used to direct and dispatch data packets between different networks?
Which type of user interface used by operating systems?
On a multiple choice answer sheet which type of technology is used to read pencil or pen marks?
A ________ is a program which coverts the entire source code of a programming language into executable machine code for a CPU.
Vacuum Tubes were used in which generation of Computers?
_________ term is used for those hardware devices that are not part of the main computer system and are often added later to the system.
What are the horizontal and vertical lines on a worksheet called?
What term is used for moving down a page in a document?
Which type of device is used for identifying people by their unique characteristics?
_______ is a coded entries which are used to gain access to a computer system.