Question

The average age of Shikha and her husband Amit is 48 years. the average age of shikha , amit and their daughter advika is 39 years. find the age of advika

Answer 1

Answer:

21 years

Step-by-step explanation:

let Shikha is S,

Amit is A,

Advika is AD,

(Average formula = (Total observations)/No.Of Observations)

Average age of Shika and Amit = 48 years

         (S+A)/2 = 48

          (S+A) =48x2= 96

Average age of Shika Amit and Advika = 39 years

(S+A+AD)/3 = 39

96+AD = 39x3

96+AD = 117

AD = 117-96

AD = 21

Therefore Advika age is 21 years