Question 1107489

Sally being 6 years older than Juan means their ages can not add to 35.  

If Juan's age is even, so is Sally's age and even+even = even
If Juan's age is odd, so is Sally's age and odd+odd = even

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J+(J+6) = 35
2J = 29
J = 14.5  —>  S = 20.5    <<<—— must resort to real numbers to answer, that is unusual.

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