Math, asked by chikkuangel, 11 months ago

three year ago the average age of a family was 27 years. the present average age is also 27 years after the including of a child into the family. find the age of the child

Answers

Answered by littyissacpe8b60

3years ago average age of family = 27

parents age = 27 x 2 = 54

Current parents age = 54 + 6 = 60

Current age average including child = 27

father + mother + child = 27 x 3 = 81

60 + child = 81

child = 81 - 60 = 21 years old

littyissacpe8b60: Sorry it should be 21

littyissacpe8b60: hey your question is incomplete. it was 5 family members which you left. Where is 5 in your question?

littyissacpe8b60: a family of 5 is 27. Where did it go?

littyissacpe8b60: Now how will I edit it

littyissacpe8b60: I will tell here

littyissacpe8b60: average of 5 family members = 27. so total age = 27 x 5 = 135

littyissacpe8b60: Now after 3 years = 135 + 15 = 150

littyissacpe8b60: Average of family = (Family + child)/6 = 27

littyissacpe8b60: 150 + child = 27 x 6

littyissacpe8b60: Child = 162 - 150 = 12years old

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