Question
The average age of a class was 16 years. 8 new
students with an average age of 12 years joined the class. So, the average age of class decreased by 1 year. The original number of students in the class was:Solution
Let the number of students in the class be X. Then the age of x students= 16x New Average = 16- 1 = 15 (16x + 8*12)/(x + 8)= 15 => 16x- 96= 15x + 120 => 16x- 15x= 120-96 => x= 24
Large transaction processing systems in automated organizations use ________.
What is the use of dbase III plus?
What is a “cell” in Microsoft Excel?
Structured programming languages such as C, COBOL and FORTRAN were used in which of the following computers?
What does COBOL stand for?
A computer system generally has a memory storage to store large amounts of data permanently. Which of the following options represents the storage space...
An Optical Storage Device is __________.
What type of graphical model is used to define a database?
India's first super computer?
A collection of drawing, diagrams and photograph that you can insert into documents-
Relevant for Exams:
