How do you all figure material cost. Say you want to make 30% on all you materials. You have a $16.00 plant and you want to sell it for the 30% profit. I take the $16 and multiply it by 30% then add the 16 back on. 16x.3=4.8 4.8+16=20.80 Is this correct because now I hear I am doing it wrong and should take the $16 and Divide it by 70% 16/.7=22.86 What is everyone else's take on this subject.