Answer:
B hope help you stay happy
 
        
             
        
        
        
It is B nevermind I thought it was c but it wasn't.
 
        
             
        
        
        
Answer:
 is the total pressure of the tank.
 is the total pressure of the tank.
Explanation:
Partial pressures of nitrogen = 
Partial pressure of oxygen =  
Total pressure of gases in the tank = P
Applying Dalton's law of partial pressures :


 is the total pressure of the tank.
 is the total pressure of the tank.