An irreversible liquid-phase second-order reaction
$$\boldsymbol{A} \stackrel{k}{\longrightarrow} \boldsymbol{B}$$
with rate constant $k=0.2$ liter. $\mathrm{mol}^{-1} \mathrm{~min}^{-1}$, is carried out in an isothermal non-ideal reactor. A tracer experiment conducted on this reactor resulted in a residence time distribution ( $E$-curve) as shown in the figure below. The areas of the is fed to the reactor. The segregated model mimics the nonideality of this reactor. The percentage conversion of $A$ at the exit of the reactor is______________ (rounded off to the nearest integer).
