Tang Company accumulates the following data concerning raw materials in making its finished product: (1) Price per pound of raw materials - net purchase price $2.50, freight-in $0.30, and receiving and handling $0.20. (2) Quantity per gallon of finished product-required materials 3.60 pounds, allowance for waste and spoilage 0.90 pounds. Compute the following. (Round answers to 2 decimal places, e.g. 1.25.) (a) Standard direct materials price per pound of raw materials. $ (b) Standard direct materials quantity per gallon. pounds (c) Total standard materials cost per gallon. $