Dawson's Designs has a predetermined overhead rate of $8 per labor hour, dividing budgeted overhead costs of $240,000 by an estimated 30,000 direct labor hours for the year. Dawson's actual overhead for April was $10,200 variable and $5,400 fixed, and the standard hours allowed for the product produced in April was 2,000 hours 2. which was determined by Calculate the total overhead variance for April