Answer: aww your so sweet
Explanation: The greatest glory in living lies not in never falling, but in rising every time we fall. -Nelson Mandela
The amount of vinegar is the amount of mayo divided by 2. therefore the answer is 8 teaspoons of vinegar.
If it were the other way around and you knew the amount of vinegar and needed to find out the amount of mayo, you would multiply the vinegar by 2