SOLUTION: Stan says my niece is currently 1/3 of my age. But In 12 years old she will be 1/2 of my age how old is stan now

Question 1091113: Stan says my niece is currently 1/3 of my age. But In 12 years old she will be 1/2 of my age how old is stan now
Found 2 solutions by josmiceli, MathTherapy:
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = Stan's age now
Let = niece's age now
----------------------------
(1)
(2)
--------------------------------
(1)
(2)
(2)
(2)
--------------------------------
Plug (1) into (2)
(2)
(2)
and
(1)
(1)
------------------------
Stan is 36 now
------------------------
check:
(2)
(2)
(2)
(2)
OK

Answer by MathTherapy(10552) (Show Source): You can put this solution on YOUR website!

Stan says my niece is currently 1/3 of my age. But In 12 years old she will be 1/2 of my age how old is stan now

Let Stan's age be S
Then niece's is:
We then get:

2S + 72 = 3S + 36 ------- Multiplying by LCD, 6
2S - 3S = 36 - 72
- S = - 36
S, or Stan is:
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