i am a 3digit number that is less than 500. My ones digit is twice the hundreds digit. The sum of the three digits is 14. What number am I?

Answer 1

a b c

c = 2 a
a + b + c = 14

a b 2a

3 a + b = 14
ones digit is even
1 b 2 ---> 3+b=14, b = 11 no
2 b 4 ----> 6 + b =14, b = 8 ok
so
2 8 4

Answer 2

3+2=6+7=14