What number that is less than 50 000

Question

My ones digit, which is half, is four more than my hundreds digit. Five less than my ones is my ten thousand digit. The rest of my digits are zero. What number am I?

Answer 1

ABCDE is the number. E=C+4 (ones digit is 4 more than hundreds digit). A=E-5. B=D=0. So A=C-1.

A	B	C	D	E
1	0	2	0	6
2	0	3	0	7
3	0	4	0	8
4	0	5	0	9

E is half of what? Is it 12, 14, 16 or 18? This would give one of the numbers 10206, 20307, 30408, 40509.

If C is half of E the answer is 30408. If E is half the combined digits AC (ten thousands and hundreds digits) then the answer is 10206.