I'm trying to figure out the excel formula to use for the Eco7 case study. Based on the answer for wholesaled revenue, per oil change = 8.00. I got 8.10 by taking 1.62 (I calculated this as the per unit price from the wholesaler) * 5 quarts. I got for the gross profit for the wholesaler 1.01 (the answer showed $1). I cannot figure out Avellin revenue, per oil change and the gross profit and gross margin. I don't need the answers, excel will calculate those, I need the formula