Question 629899: Hello, I need some help regarding a question posed by our teacher, "A certain two digit number is equal to 9 times the sum of its digits. if 63 were subtracted from the number , the digits would be reversed. find the number." I've tried to represent the values of the Units and The Tens digits, I just can't seem to get it, please I need assistance. Thank you.
Answer by Charles3475(23)   (Show Source):
You can put this solution on YOUR website! 81 is the answer. It is determined by trial and error.
The number must be a multiple of 9 (Given). So try 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99.
The one that works is 81.
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