Question
The average age of a group of 10 friends is 27 years. If
one friend leaves the group, the average becomes 25years. Find the age of the friend who left the group.Solution
ATQ, The sum of ages of 10 friends is 270 (since the average is 27 years). If one friend leaves, there are 9 friends left, and the new average becomes 25 years. The new sum of ages is 225. The age of the friend who left is the difference between the original sum and the new sum = 270 - 225 = 45. So, the age of the friend who left the group is 45 years.
With reference to the Global Financial Innovation Network (GFIN), consider the following statements:
I.        It is a consortium of o...
What is the main objective of the Pradhan Mantri Jan Dhan Yojana?
Who among the following said, "Employee welfare means anything done for the comfort and improvement, intellectual or social, of the employees over and a...
Which Indian city was recently ranked the 12th richest city globally?
Which of the following statements is/are incorrect about the “Wholesale Price Index (WPI)”?
I.        WPI does not capture changes...
Which of the following are the key actors in industrial relations according to Dunlop's System Theory?Â
Which of the following is not included in the National Income?
Match the following correctly;
What type of economy does India have?
"ILO Conference No. 87" sometimes seen in the news is related to which of the following?
Relevant for Exams:
