suppost the cost of manufactoring a product depends on both the nsuppost the cost of manufactoring a product depends on both the number of units produced and the cost of raw materials if the cost per unit of raw materials increases, the total cost of manufactoring increases directly. on the other hand,if the ifficiency of production increases(meaning more units can be produced in less time),the cost per unit decreases inversly,this senario illustrates what kind of variation?umber of units produced and the cost of raw materials