What is the volume of solvent needed for the preparation of an equal 10% title solution when using 15 mL of solute?

3 answers

I know 10 % w/w, or w/v, or v/v, but I do not know that a equal title solution is.
I'm wondering if Wallace meant "titer" or "titre"; however, I don't know what an equal titer is either.
Another person who posted his/her question from a phone -- and depended on auto-correct? Without proofreading before hitting that Submit button?