Question

average age of family of four member is 34 what is average age of family after 4 years​

Answer 1

Hi there!

Your answer is in the attachment.

Answer 2

Average = sum of all observations/ total number of observations

Average of ages = (person 1 age + person 2 age + person 3 age + person 4 age)/4

34 = (person 1 age + person 2 age + person 3 age + person 4 age)/4 —-> 1

After 4 years, average age of 4 members = ((person 1 age + 4) + (person 2 age + 4) + (person 3 age + 4) + (person 4 age + 4))/4

After 4 years, average age of 4 members = (person 1 age + person 2 age + person 3 age + person 4 age + 4 + 4 + 4 + 4)/4

After 4 years, average age of 4 members = ((person 1 age + person 2 age + person 3 age + person 4 age)/4) + ((4 + 4 + 4 + 4)/4)


After 4 years, average age of 4 members = ((person 1 age + person 2 age + person 3 age + person 4 age)/4) + (16/4)

After 4 years, average age of 4 members = ((person 1 age + person 2 age + person 3 age + person 4 age)/4) + 4

After 4 years, average age of 4 members = 34 + 4 (from 1)

After 4 years, average age of 4 members = 38 ——> Answer