please explain

Question 1 0/16.67 pts Louis Renee hair products makes shampoo. The following pertains to there manu Units produced Oz per unit Soap mix Avocado Oll Perfume Budgeted Actual 20.000 22.000 24 60% 35 5% Actual Soap use in ounces Actual Avocado Oil in ounces Actual Perfume in ounces 3,17300 1,85700 26400 Soap cost per ounce Avocado Oil cost per ounce Perfume cost per ounce .75 1.5 6.00 What is the mix variance for soap? You Answered Correct Answer) -255 margin of error +/- 1