Question 1058733
The sum of the digits of a 2-digit number is 15.  The digits 
are reversed when 27 is subtracted from given number.  
What is the the two-digit number?
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Reversing the digits of a 2-digit number changes the value by 9 times the difference between the digits.
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A change of 27 --> a difference of 27/9 = 3
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t + u = 15
t - u = 3
---------------- Add
2t = 18
t = 9
u = 6
---> 96
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No need to write a Master's thesis on it.