A dryer is used to reduce the moisture content of 250 kg of paste material from 25% to 3% (mass). The total area available for drying is 45 m2. The total time for drying is 20 minutes. Determine the amount of material that can be treated if the same product is required for a feed containing 30% moisture. Additional information: Equilibrium moisture content = 0.007 kg moisture/kg dry solids Critical moisture content = 0.16 kg moisture/kg dry sol