SOLUTION: This year, your brother Jack will be 2 years from being twice as old as your sister Jen. The sum of Jack’s age and three times Jen’s age is 66. How old is Jen?

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Question 198921: This year, your brother Jack will be 2 years from being
twice as old as your sister Jen. The sum of Jack’s age and
three times Jen’s age is 66. How old is Jen?

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let k= Jack's age now
Let n= Jen's age now
given:
(1) k+%2B+2+=+2n
(2) k+%2B+3n+=+66
----------------
Subtract (1) from (2)
(2) k+%2B+3n+=+66
(1) -k+%2B+2n+=+2
--------------------
5n+=+68
n+=+13.6
Jen is 13.6 yrs old