(b) Repeat (a), assuming the purchase price is $5.15 and the quantity purchased and used is 28,000 units Total Materials Variance: AQ X AP minus SO X SP = Variance Value X Value Value X Value = ? minus = ? F Materials price variance: AO X AP minus AO X SP = Variance Value X Value Value X Value ? minus - ? ? U Materials quantity variance: AQ X SP minus SO X SP = Variance Value X Value Value X Value = ? minus - ? ? F