The average age of three children in a family is 25% of the average of the age of father and the eldest child. The total age of the mother and the younger child is 49 years. If the father’s age is 28 years, what is the age of the second child?
Given that the average age of three children in the family is 25% of the average of the father and the eldest child Therefore, let us suppose the age of the three children be a, b , c And the average would be = (a+b+c)/3 = 25/100×(28+c)/2 = (a+b+c)/3 = (28+c)/8……………..(i) Let us suppose that the age of mother is d, ∴ d + a = 49 …………………(ii) Even from both the equations, value of b cannot be determined.
Which of the following shortcut key is used to select all cells of the current row in MS-Excel 2010 worksheet?
________ records everything you type on your PC in order to obtain your log-in name, passwords and other sensitive information.
Speed of 1,000,000,000 periods per second in computer terms is equivalent to:
Expansion cards are inserted into
A dumb terminal has
Which of the following is a web browser created and developed by Microsoft?
Which of the following extension is not audio extension ?
MS word is software of ____
Which of the following device is used to produce hard copies of digital documents?
Which device is used to read information encoded in barcodes?
