SOLUTION: In 1921, Grandpa is 2 times older than Tom in 2000. In 1930, Grandpa is 3 times older than Tom in 2000. What is grandpa age in 2000? I'm not sure how to solve this but this is w

Question 941090: In 1921, Grandpa is 2 times older than Tom in 2000. In 1930, Grandpa is 3 times older than Tom in 2000. What is grandpa age in 2000?
I'm not sure how to solve this but this is what I did:
(G = Grandpa age)
2G=3(G+9) --> 2G=3G+27 -->G=+27 a.k.a G=27 (Age in 1930) -->(2000-1930)+27 = 97 years old in 2000

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = Tom's age in 2000
Let = grandpa's age in 2000
-------------------------------
In 1921, grandpa's age is
( 2000 - 1921 = 79 )
---------------------
(1)
---------------------
In 1930, grandpa's age is
( 2000 - 1930 = 70 )
---------------------
(2)
---------------------
(1)
and
(2)
-----------------------

Multiply both sides by

grandpa is 97 in 2000
---------------------
check:
(1)
(1)
(1)
(1)
and
(2)
(2)
(2)
(2)
OK

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