Let us say the revenue of coca cola was x then the revenue for PepsiCo isx+9 x + x+9 = 51 2x = 51-9 2x = 42 x=21 Therefore the revenue of coca cola I.e x = $21 And the revenue of pepsico I.e x+9 =21 + 9 =$30
So if the combined revenues were $51 billion. Then it would be best to divide that between the two companies as a starting point. Each company would have $25.5 billion if they were split 50-50. Since PepsiCo has 9 billion more than Coca-Cola. Simply take PepsiCo's value and add $9 billion to it, which would be $34.5 billion. Finally, take $51 billion, subtract it $34.5 billion, which is PepsiCo's value to get Coca-Cola's value, which is 16.5 billion for me.