Answer:The answer is $1,600 favourable
Step-by-step explanation:
Material usage variance is equal to the difference between the standard quantity (SQ) required for actual production and the actual quantity used multiplied by the standard material price (SP) The material usage variance is calculated as
Material usage variance = ( SQ - AQ) SP
In the question, standard price = $4, Standard Quantity = 3000 unit, Actual Quantity = 5,600 gallons
Per unit standard for direct materials = 2 × 3000 = 6,000
Therefore, putting the variables into the formula
(6,000 - 5,600) × 4
= 400 × 4
= 1,600 Favourable