SOLUTION: the sum of digits of a three-digit number is 15. The digit at tens place is half of the sum of digits at hundreds and units places. If 396 is added to the number , the digits at h

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Question 1110306: the sum of digits of a three-digit number is 15. The digit at tens place is half of the sum of digits at hundreds and units places. If 396 is added to the number , the digits at hundreds and units places are interchanged. Find the number.
Answer by Edwin McCravy(20056)   (Show Source): You can put this solution on YOUR website!
h = the hundreds digit
t = the tens digit
u = the units (or ones) digit
100h + 10t + u = the number "HTU"
100u + 10t + h = the number "UTH" with the digits at 
the hundreds and units places interchanged

the sum of digits of a three-digit number  is 15. 



The digit at tens place is half of the sum of digits at hundreds and units places.



If 396 is added to the number, the digits at hundreds and units places are interchanged. Find the number.



Can you solve the system of those three equations?


Edwin
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