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Sheila is 17 years younger than Gil. If Gil' s age is written after Sheila's the result is a four-digit perfect square.The same statement could be made 13 years from now find Sheila's age.

Hans007  Feb 5, 2018
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By brute force  :

 

Gil's current age  =  36

Sheila's current age  = 36 - 17  =  19

Perfect square  =  1936   =  44^2

 

In 13 years

Gil  =  49

Sheila  = 32

Perfect square  = 3249   =  57^2

 

 

 

 

cool cool cool

CPhill  Feb 5, 2018

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