the data set is from a restaurant bar and refers only to beverage ingredients. calculate cost of beverages sold and BC% for this operation? opening storeroom inventory = $38.740. closing storeroom inventory = $35.490. purchases = $71.750. transfers in = $860 transfer out = $1,730. promotions = $220. bar opening inventory = $1,270. bar closing inventory = $1,430 total bar beverages sales = $381,400