$[03](15+10$ Mark$)$

A$.$ The process in figure $[1]$ contains dryer that is used to dry a particular solid from $26\%$ to $6\%$ moisture $($dry basis$).$ If the constant time required is $120$min, the data on the drying curve is shown in table below. Investigate what would be the weight of dry material in feed, then calculate the total design time for this process.

$\backslash$table$[[$Kg water $\frac{?}{Kg}$ dry solid,$0\mathrm{.}3,0\mathrm{.}2,0\mathrm{.}18,0\mathrm{.}15,0\mathrm{.}14,0\mathrm{.}11,0\mathrm{.}07,0\mathrm{.}05],[$Drying rate $k\frac{g}{h}r.m^2,1\mathrm{.}22,1\mathrm{.}22,1\mathrm{.}14,0\mathrm{.}90,0\mathrm{.}80,0\mathrm{.}56,0\mathrm{.}22,0\mathrm{.}05]]$