10°C mdi = 21g msi = 121 g ci = 21/121 ·100
60°C md = 109,9g ms = 209,9 g c = 10990/209,9
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msf = 400 + m mdf = 400·21/121 /100 + m = 84/121+m cf = 10990/209,9
(84/121+m)·100/(400+m) = 10990/209,9
1,325+ 1,9m = 400 + m 0,9m = 398,674 m = 442,97g