A batch of wet solid was drying rate curve is represented below and also use graph in Q5, is to be dried from a free moisture content of w1=0.38 Kg water/ Kg dry solid to w2 = 0.04 Kg water/ Kg dry solid. The weight of dry solid is 399 Kg dry solid and Area is 18.58 m2 of top drying surface. Calculate the drying time? Assume a straight falling period.