SOLUTION: My tens' digit is twice my hundreds digit. My one's digit is 3 more than my tens' digit. My ones digit is the sum of my hundreds and tens' digit. What 3 digit number am i?

Question 512420: My tens' digit is twice my hundreds digit. My one's digit is 3 more than my tens' digit. My ones digit is the sum of my hundreds and tens' digit. What 3 digit number am i?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Call the ones digit
Call the tens digit
Call the hundreds digit
given:
(1)
(2)
(3)
------------
Substitute (2) into (3)
(3)
Subtract from both sides
(3)
and
(1)
(1)
and
(3)
(3)
(3)
The number is 369
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