When Analysing Table 1, the question stated by the interviewer is 'What could be a reason for deteriorating margins (PM) in prepared food?'
The answer provided here is:'We know that revenue is not a problem, as there is substantial growth. So, either product mix has changed or labour/material costs have increased.'
However we can clearly see from Table 1 that the cause of the deteriorating PM is the increase in COGS. So I don't understand why the suggested answer contains 'changed product mix'. Since labour/material cost would be included in COGS.
Many thanks for your help.