Tang Company accumulates the following data concerning raw materials in making one gallon of finished product: Price-net purchase price $2.53, freight-in $0.30, and receiving and handling S0.20. Quantity-required materials 3.59 pounds, allowance for waste and spoilage 0.90 pounds. Compute the following. (a) Standard direct materials price per gallon. (b) Standard direct materials quantity per gallon. (c) Total standard materials cost per gallon