The standard materlals cost to produce 1 unit of Product R is 7 pounds of material at a standard price of $64 per pound. In manufacturing 5.500 units, 37,100 pounds of material were used at a cost of $66 per pound. What is the direct materials quantity variance? Mutiple Choice 515,400 favorable. $74,200 favorable. $74,200 unfavorable. $89,600 unfavorable. srafnn fauncahcs