can you please help. Time variance is 520 i cant figure the rest

Direct Labor Variances The following data relate to labor cost for production of 3,600 cellular telephones: Actual : Standard: 2,400 hrs. at $12.7 2,360 hrs. at $13 a. Determine the direct labor rate variance, direct labor time variance, and total direct labor cost variance. Enter a favorable variance as a negative number using a minus sign and an unfavorable variance as a positive number. Rate variance Time variance Total direct labor cost variance b. The employees may have been less-experienced or poorly trained, thereby resulting in a efficient performance. Thus, the actual time required was labor rate than planned. The lower level of experience or training may have resulted in than standard.