SOLUTION: Eight-year old Nathan wants to compare his age with that of his mother and grandfather. His mother is exactly four times his age and his grandfather is exactly seven times his age

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: Eight-year old Nathan wants to compare his age with that of his mother and grandfather. His mother is exactly four times his age and his grandfather is exactly seven times his age      Log On


   

Question 287627: Eight-year old Nathan wants to compare his age with that of his mother and grandfather. His mother is exactly four times his age and his grandfather is exactly seven times his age. How old is Nathan's mother and grandfather?
My answers are 32 yrs for his mother and 56 yrs for his grandfather. Are my answers correct?
Answer by Grinnell(63) About Me  (Show Source):
You can put this solution on YOUR website!
32 for mother
56 for grandfather
You are correct. ok
Let x be the age of the Nathan. Mother's age is 4x
7x is age of Grandfather
Soo Mother's age is 4(8) = 32
Grandfather's age is 7(8) =56
Now your instructor may be looking for this 4x is mother's age in comparison to Nathan's age so
Nathan's age is 1/4 Mother's age. Nathan's age is 1/7 Grandfather's age. Does this help further?