Decomposition of both $A_2\left(g\right)$ and $B_3\left(g\right)$  follows 1st order kinetic as:
   $A_2\left(g\right)\stackrel{K_1}{\to }2A\left(g\right)$                              $K_1\left(h{r}^{-1}\right)={10}^2{e}^{-\frac{14000J}{RT}}$
   $B_3\left(g\right)\stackrel{K_2}{\to }3B\left(g\right)$                             $K_2\left(h{r}^{-1}\right)={10}^3{e}^{-\frac{20000J}{RT}}$
If one mole of each  $A_2\left(g\right)$ and $B_3\left(g\right)$ are taken in a 10 L evacuated flask and heated to some temperature so that they start decomposing at the same rate, determine total pressure (in atm) in the flask after 1.0 hr.