The following data pertains to the month of October for ElmCo when production was budgeted to be 4,800 units of product P90. P90 has budgeted variable manufacturing overhead costs per unit of: Variable Overhead assigned at a rate of $50 per machine hour. Each unit of P90 is budgeted to require 0.05 machine hours. In October the production of P90 totaled 5,000 units. The actual results were: Machine Hours used: Variable overhead costs: 265 machine hours $17,205 Determine the variable overhead efficiency variance. Negative numbers indicate a favorable variance. (Round to the nearest $1.00)