I wanted to make 3 wt % of starch. So I calculated I needed 6.9 gram of starch in 230 gram. However my starch had 10 % water content. So, I calculated that I need 7.66 gram of starch to compensate the water.
I also needed to add 30 % of glycerol to starch. So I calculated i needed 2.95 gram of glycerol.
Then I mixed 7.66 gram of starch with 2.95 gram of glycerol and 219.39 gram of water.
P.S: I weight 7.66 gram of starch but in reality this 7.66 gram is not only starch because some water is also presented together with starch.
So my question is what is the concentration of starch wt %? 7.7/230x 100=3.34 % or 7/230x100=3 %?