Hogle Mfg. Co. uses a standard costing system. The standard time to produce one unit is 4 hours, and normal production is 3,000 units monthly. Overhead costs were estimated to be $135,000. The standard variable overhead rate is $5 per machine hour. During April the following results were recorded:

Units produced 3,100

Units sold 2,800

Machine hours required 12,800

Actual overhead costs $136,000

what was fixed overhead production volume variance and The total overhead allocated