Explanation

Sales mix:

While the overall sales mix can affect profitability,

CVP analysis assumes that the relative proportions of different products sold (i.e., the sales mix) remain constant within a given period.

If the sales mix changes significantly, the calculations based on the initial assumption will be inaccurate

Sales Mix is not involved in CVP analysis.

Cost consist of fixed and variable cost.

Cost volume profit involves selling price, level of activity,fixed cost but does not include sale mix.

It states how profit change because of change in volume,fixed cost and selling price.