Exercise #3 - Rate Variance / Time Variance/ Total Cost Variance (4 puntos) Japan Company produces lamps that require 2.25 standard hours per unit at an hourly rate of $ 15.00 per hour. Production of 7,700 units required 19,250 hours at an hourly rate of $ 14.90 per hour. Instructions: Determine cul es el direct labor: (a) Rate variance (b) Time variance (c) Cost variance Exercise #4 - Materials Price Variance / Materials Quantity Variance (4 puntos) Marina Aquatic Corp.'s standard material requirement to produce a 2018 Model is 15 pounds of material at $ 110.00 per pound. Last month, Marina Aquatic purchased 170,000 pounds of material at a total cost of $ 17,850,000. It used 162,000 pounds to produce 10,000 units of the 2018 Medel, Instructions: Calculate: A. The materials price variance B. The materials quantity variance Indicate whether each variance is favorable or unfavorable. 5- Direct Material Price Variance ( 4 puntos) Vextex Corporation has the following direct material cost data for November: Actual costs of 5,445 pounds of material, $ 4.35; and standard costs for 4,800 pounds of material at $ 5.24 per pound