SOLUTION: I am a two-digitnumber, I am double an odd number, My units digit is half of my tens digit. What am i

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Question 421908: I am a two-digitnumber, I am double an odd number, My units digit is half of my tens digit. What am i
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let the units digit = a
The tens digit = 2a
The value of the number is: +10%2A%282a%29+%2B+a+=+21a
The number must be even:
If a+=+2
number is 42
If a+=+4
number is 84
84 is not double an odd number, so the answer
must be 42