Tippi Company produces lamps that require 2.5 standard hours per unit at an hourly rate of $17.50 per hour. If 8,700 units required 21,250 hours at an hourly rate of $18.10 per hour, Calculate the following (enter amounts in whole numbers, no currency symbol, no decimals, negative number for favorable, positive number for unfavorable) direct labor rate variance $ direct labor time variance $ Total Direct labor cost variance $