31. (Missing data, three-variance approach) The flexible budget formula for total overhead for the Windlass Corporation is $720,000  $16 per direct labor hour.

The combined overhead rate is $40 per direct labor hour. The following data have been recorded for the year:

Actual total overhead $1,160,000 Total overhead spending variance $ 32,000 U Volume variance $ 48,000 U Use a three-variance approach to determine the following:

a. Number of standard hours allowed

b. Actual direct labor hours worked