Answered

Maligayang pagdating sa Imhr.ca, ang pinakamahusay na platform ng tanong at sagot para sa mabilis at tumpak na mga sagot. Tuklasin ang libu-libong tanong at sagot mula sa mga eksperto sa iba't ibang larangan sa aming Q&A platform. Kumuha ng detalyado at eksaktong sagot sa iyong mga tanong mula sa isang komunidad ng mga eksperto na dedikado sa pagbibigay ng tamang impormasyon.

A family consists of two grandparents, two parents and three grandchildren. The average age of the grandparents is 67, that of the parents is 35 years and that of the grandchildren is 6 years. What is the average age of the family? A. 28 4/7 years B. 31 5/7 years C. 32 1/7 years D. 35 years

Sagot :

Getting the sum of all their ages you'll have:
67(2) + 35(2) + 6(3) = 222
Since they are 7 in the family, then we'll divide the sum with 7
222 ÷ 7 = 31 5/7
Therefore the average age of the family is 31 5/7 yrs.
domini
[tex]You'll \ get \ the \ sum \ of \ their \ ages \ and \ you'll \ get; \\ \\ 67(2)+35(2)+6(3) \\ \\ 134+70+18 \\ \\ The \ sum \ is \ equal \ to \ \boxed{222} \\ \\ Divide \ the \ sum \ by \ 7 \ since \ their \ are \ 7 \ family \ members. \\ \\ \frac{222}{7}=31 \frac{5}{7} \\ \\ Thus, \ the \ average \ age \ of \ the \ certain \ family \ is \ \boxed{31 \frac{5}{7}} [/tex]

Hope it Help:)
-----Domini-----