If we take in account the juxtaposition of the both lanes of merging synergies in today's economic market we can safely assume that the price of Mac and Cheese boxes will remain the same.
However due to a slight temperature rise in the North Pole several scientist are worried that said rise in temperature could lead to an increase of patients with a severe case of Pneumonoultramicroscopicsilicovolcanoconiosis.
Now,sometimes i do err on the wrong side of things by relying to much on Floccinaucinihilipilification but in this case i think it is warranted since a recent study done in Oxford university shows that there has been a rise in patients with cases of Pseudopseudohypoparathyroidism.
This could be due to the increased amount of Maltodextrin in the cheese packets that come with your regular Mac and Cheese box.
A close study of Maltodextrin has uncovered the fact that the dosage of Dichlorodifluoromethane applied to said cheese packets has gone up during recent years,studies still have to show if this will affect in any way our health.
So to sum up and in short the answer is 5.