Question
The current age of Derek is twice that of Eve. 7 years
from now, Derek's age will be 1.5 times the age of Fred at that time. If Eve is 5 years younger than Fred, determine the current age of Derek.Solution
Let the present age of Eve be βeβ years. Thus, the present age of Derek = β2eβ years. Let the present age of Fred be βe + 5β years. ATQ, (2e + 7) = 1.5 Γ (e + 5 + 7), Or, 2e + 7 = 1.5e + 18, Or, 2e β 1.5e = 18 - 7, Or, e = 11, Therefore, 2e = 22. Therefore, the current age of Derek = 22 years.
What kind of server converts IP addresses to domain names?
Which of the following is an Electrical pathway to transfer data among different parts of the computer?
Which one is the most suitable reason to use Macro in MS Office (Word, Excel, PPT, etc) ?
A computer network which is used within a building is called a:
What is the purpose of encryption in computer security?
Which of the following storage media is considered non-volatile?
In Β EBCDIC , Which type of computers uses the 8-bit code ?
What does CD-R stand for in the context of telecommunications?
Which memory type is generally used as a buffer between the CPU and main memory to improve performance?
____________ deletes all the files that it infects.