Answer:
a. Direct labor rate
variance (unfavorable)
$8,850 [($30.50 – $30.00) × 17,700 hrs.]
b. Direct labor time
variance (unfavorable)
$6,000 [(17,700 hrs. – 17,500 hrs.) × $30.00]
c.
Direct labor cost
variance (unfavorable)
$14,850
($8,850 + $6,000) or
[($30.50 × 17,700 hrs.) – ($30.00 × 17,500 hrs.)]
= $539,850 – $525,000