Psychrometry and Grain Drying

In Lewis thin-layer drying model $\frac{M - M_e}{M_0 - M_e} = \exp(-k t)$, initial moisture is $M_0 = 0.25$, equilibrium moisture is $M_e = 0.10$ (giving $M_0 - M_e = 0.15$), and drying constant is $k = 0.5\text{ h}^{-1}$. After drying time $t = 2.0\text{ hours}$ ($\exp(-1.0) \approx 0.3679$), the moisture content $M = 0.10 + 0.15(0.3679)$ is (rounded off to three decimal places):