Moar math -
I made 125ml of 6mg 55/45 @ 15% flavor for a friend. She actually wants 12mg.
How much 100mg nic (PG), VG & flavoring (PG) do I add to keep my ratios but change it to 12mg?
I already know the answer but it's a good DIY exercise. My answer is simple and gets within .5% of all.