Exercise 11-7 Your answer is partially correct. Try again. Ceradyne uses a standard costing system. For production of a fuel cell, standards call for 4 model RN-3 valves per cell costing $2,380 each. During 2018, the company purchased 220 valves for $466,400. The company used 228 valves in the production of 55 fuel cells (8 valves were ruined through installation error. Calculate material price and quantity variances for the model RN-3 valves. (Enter all variances as a positive number.) Material Price Variance 59,280 Favorable Material Quantity Variance 19,040 Unfavorable LINK TO TEXT Question Attempts: 1 of 3 used