assume the following:

- the variable portion of tbe predetermined overhead rate is $1.50 per direct labor hour.

- the standard labor hours allowed per unit of finished goods is 3 hours.

- the variable overhead rate variance is $3,000 F

- the variable overhead spending variance is $4,500 F

- the company produced 15,000 units of finsibed goods during the period.

what is the actual quantity of direct labor hours worked during the period?