In a family, ages (in years) of members, Krishna, Radhika, Niharika and Nikhil are 44, 39, 17 and 12.
Can you see a relationship between the change in mean and the number of years.

In a family, ages (in years) of members, Krishna, Radhika, Niharika and Nikhil are 44, 39, 17 and 12 : Find the arithmetic mean of their ages.

In a family, ages (in years) of members, Krishna, Radhika, Niharika and Nikhil are 44, 39, 17 and 12 :What were their ages 5 years before ? Find their mean age.

Three friends went to a hotel and had breakfast to their taste, paying ₹16, ₹17 and ₹21 respectively : Do you notice any relationship between the change in expenditure and the char in the mean expenditure.

Three friends went to a hotel and had breakfast to their taste, paying ₹16, ₹17 and ₹21 respectively i) Find their mean expenditure. ii) If they have spent 3 times the amount that they have already spent, what would their mean expenditure be? iii) If the hotel manager offers 50% discount, what would their mean expenditure be? iv) Do you notice any relationship between the change in expenditure and the change n mean expenditure?

The ages (in years) of players are in a team of 16, 16, 16, 14, 17, 18. Then find the following: (i) Age of the youngest and the oldest player. (ii) Mean age of the players. What is the average number of glasses of water that you drink per day? in a week. How did you find the average?

Two years ago the mean age of 40 people was 11 years. Now a person left the group and the mean age has changed to 12 years. Find the age of the person who left the group.