Answer and Explanation:
The computation is given below:
a)
Direct labor rate variance = (Actual rate - Standard rate) × Actual hours
= ($22.50 - $23) × 8,450 hours
= -$4,225.00 Favorable
Direct labor time variance = (Actual hours - Standard hours) × Standard rate
= (8,450 hours - 8,400 hours) × $23
= $ 1,150.00 Unfavorable
Total direct labor cost variance is
= Direct labor rate variance + Direct labor time variance
= $4,225 Favorable + $1,150 Unfavorable
= -$3,075.00 Favorable
b. In the case when the employees are not much experienced or they are poorly trained so the less experience cause to less performance due to which the actual time needed should be more than the standard one