Standard cost system based problem

Question

Problem:

Tub Co. uses a standard cost system. The following information pertains to direct labor for product B for the month of October:

Actual rate paid                                              $8.50    per hour
Standard rate                                                 $7.80    per hour
Standard hours allowed for actual production    1,910    hours
Labor efficiency variance                                $1,790    unfavorable

What were the actual hours worked during October?

2,639

2,339

2,139

2,109