Question
The ratio of age of A and B after 8 years is 4:5
respectively. The ratio of age of A and C 6 years ago is 3:4 respectively. If the present average age of A and C is 30 years, then find the present age of C.Solution
Let the age of A and B after 8 years be 4x years. and 5x years respectively. And the present age of C is ‘y’ years. So, (4x – 14)/ (y – 6) = 3/4 16x – 56 = 3y – 18 16x – 3y = 38……………. (1) And 4x – 8 + y = 60 y = 68 – 4x…………………. (2) From equations (1) and (2), we get. 16x – 204 + 12x = 38 28x = 242 x = 8.6 Present age of C = 62 -(4 ×8.6) = 27.6years
The class NP-complete includes problems that are:
Which of the following is NOT a method for handling deadlocks?
Which of the following statements is true regarding the class NP?
What is a deadlock in a computer system?
Which famous sorting algorithm uses the divide-and-conquer strategy?
Which data structure in a compiler is used for managing information about variables and their attributes?
Which command will help you to find the time of how long the system is being running?
In which case higher bandwidth can be achieved
What is an algorithm?
In the context of ADTs, what does "encapsulation" refer to?
