Mathematics · Mixtures and Alligations

A milkman has Milk A containing 10% water and another type Milk B containing 28% water. He wants to prepare 42 liters of a final mixture in which the water content is 20%. He also adds pure milk to the final mixture equal to 25% of the total quantity of Milk A used. The final mixture still maintains 20% water, find which of the following is true? I. The quantity of Milk A used is 20.22 litres II. The quantity of Milk B used is 24.36 litres III. The quantity of pure milk added is 30.44 litres.