Based on the standard labor hours to Sheffield and the cost per unit of labor, the total labor variance is $3,600 Favorable.
This can be found as:
= (Standard Labor Hours - Actual Labor Hours) x standard Labor Rate
Solving gives:
= ((3,600 x 2) - 6,900) x 12
= (7,200 - 6,900) x 12
= $3,600 Favorable
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