(solution) The standard factory overhead rate is $7.50 per machine hour

(solution) The standard factory overhead rate is $7.50 per machine hour

The standard factory overhead rate is $7.50 per machine hour ($6.20 for variable factory overhead and $1.30 for fixed factory overhead) based on 100% of normal capacity of 80,000 machine hours. The standard cost and the actual cost of factory overhead for the production of 15,000 units during August were as follows:

Actual: Variable factory overhead

$360,000

  Fixed factory overhead

104,000

Standard hours allowed for units produced: 60,000 hours  

What is the amount of the variable factory overhead controllable variance?

a. $12,000 unfavorable
b. $26,000 unfavorable
c. $14,000 unfavorable
d. $12,000 favorable