Question

five years ago mean age is 25years. What is the present mean age of the family​

Answer 1

Step-by-step explanation:

seh to the intended recipient you are not the intended recipient you are not the intended recipient you are not

Answer 2

let members be 'x'

the average age of the family members 5 years ago is 25 years

so the sum of age of all family members

5 years ago = 25 into x = 25x

the sum of age of these family members

now and after 5 years elapsed = 25 x

(these added 5 years * no of family members)

 = 25x + 5x = 30x

Sum of ages = 30x

no. family members = x

Therefore, current, average age  =  sum of ages/ no. of members

= 30x / x = 30