Direct Labor Variances

Bellingham Company produces a product that requires 4 standard direct labor hours per unit at a standard hourly rate of $20 per hour. If 15,000 units used 61,800 hours at an hourly rate of $19.85 per hour, what is the direct labor (a) rate variance, (b) time variance, and (c) cost variance? Enter a favorable variance as a negative number using a minus sign and an unfavorable variance as a positive number.
a. Direct labor rate variance $ Favorable
b. Direct labor time variance $ Unfavorable
c. Direct labor cost variance $ Unfavorable