dose beregning

Hej, kan nogen hjælpe med følgende opgave? Jeg ved at svaret skulle være 20 mg. 

A drug is presented in capsules containing sucrose-based MUPS. The MUPS are produced by a fluid bed coating process where the spray is applied onto sucrose starter material pellets. The spraying solution  is a 10% water-based (i.e. 90% is water) solution containing API and povidone in mass fractions of 1 + 9. Using 100g of starter material, 300 g of MUPS product is obtained after the coating process. These MUPS product is filled into capsules so that each capsule contains 300 mg of MUPS. What is the dose in each capsule (label claim)?

På forhånd tak