3. The irreversible elementary gas-phase reaction A+BC+D is carried out isothermally at 305k in a packed-bed reactor with 100kg of catalyst. The entering pressure was 20atm, and the exit pressure was 2atm. The feed is equal molar in A and B, and the flow is in the turbulent flow regime, with FA0=10mol/min and CA0= 0.4mol/L. Currently, 80% conversion is achieved. What would be the conversion if the exit pressure was 4atm and everything else remained the same