(2)In a wood drier the hot air must contain at least 2 weight percent water to prevent the wood from drying too rapidly and splitting or warping, as shown in Figure 2. The original fresh air fed contains 1 weight percent water. Wood is dried from 20 weight percent water to 5 weight percent water. The wet air leaving the drier contains 4 weight percent water. Calculate the amount of wet air that must be returned lo the drier if 20001bm/hr of wet wood is dried. [35 pts]