Heath Construction builds standard prefabricated wooden frames for walls. Each frame requires 10 direct labor hours and the standard hourly direct labor rate is $18. During July, the company produced 670 frames and worked 6,800 direct labor hours. Payroll records indicate that workers earned $127,500.

a. What were the standard hours for July construction?

b. Calculate the direct labor variances.

c. What was the actual hourly wage rate?