SOLUTION: two years ago nasir's grandpa was 7 times as old as nasir .Three years from now Nasir's grandpa will be five times as old as him.What is the age of the grandpa today?

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Question 917754: two years ago nasir's grandpa was 7 times as old as nasir .Three years from now Nasir's grandpa will be five times as old as him.What is the age of the grandpa today?
Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!
G = Grandpa's age now
N = Nasir's age now
G-2 = Grandpa's age 2 years ago
N-2 = Nasir's age 2 years ago
G+3 = Grandpa's age 3 years from now
N+3 = Nasir's age 3 years from now
two years ago nasir's grandpa was 7 times as old as nasir
G-2 = 7(N-2)
G-2 = 7N-14
  G = 7N-12
Three years from now, Nasir's grandpa will be five times as old as him.
G+3 = 5(N+3)
G+3 = 5N+15
  G = 5N+12

system%28G=7N-12%2CG=5N%2B12%29

7N-12 = 5N+12
   2N = 24
    N = 12

G = 7N-12 = 7(12)-12 = 84-12 = 72.

Edwin