Question
Four years ago, the ages of the father and his son were
in the ratio 7:2. Four years hence, the ages of the father and his son will be in the ratio 9:4. After how many years will the father's age be twice the age of his son?Solution
Let the common ratio be x. Hence, four years ago, the ages of the father and his son were 7x and 2x years. According to the question, (7x+4+4)/ (2x + 4 + 4) = 9:4 28x+ 32 = 18x + 72 10x = 40 x=4 Present age Father = 7x + 4 = 7 x 4 + 4 = 32 Son = 2x + 4 = 2 x 4 + 4 = 12 After P years the father's age will be twice the age of his son. According to the question, 32 + P = 2 x (12 + P) P = 8 year
The overall design, construction, and organization of a computer system's components is called _______.
Which of the following provides the necessary instructions for how the device communicates with the other computer hardware?
Recently Prime minister Narendra modi launched “NIRYAT” Portal. What does A stand for?
The use of tab key in the keyboard is
Which component is considered the brain of the computer?
Which type of operating system allows many users to access a single system with one OS?
On which tier we can sit directly on application and access it
What does API stand for?
You can protect sensitive data from prying eyes using ______
Which component in computer architecture is a high-speed storage location that can be accessed quickly by the CPU?
Relevant for Exams:
