Answer:
17,550
Step-by-step explanation:
Labor efficiency variance = Standard rate * (Actual hours - Standard hours)
$1200 = $24 * (Actual hours - 875*20)
50 = Actual hours - 17,500
Actual hours = 17,500 + 50
Actual hours = 17,550
So, the actual direct labor-hours which were worked is 17,550.