The irreversible primary gas phase reaction, $2$A $->$ B$,$ proceeds in PFR$.$

The raw material consists of $50\%$ of A and B$,$ respectively, and the activation energy of the reaction is $80$ kJ$/$mol$.$

If the conversion$($XA$)$ is $70\%$ at a reaction temperature of $373$ K$,$ and the reaction temperature is increased by $10$ K$,$ calculate the conversion$($XA$).$