Direct Materials, Direct Labor, and Factory Overhead Cost Variance Analysis Mackinaw Inc. processes a base chemical into plastic. Standard costs and actual costs for direct materials, direct labor, and factory overhead incurred for the manufacture of 74,000 units of product were as follows: Standard CostsActual CostsDirect materials251,600 lbs. at $5.40249,100 lbs. at $5.20Direct labor18,500 hrs. at $17.3018,930 hrs. at $17.70Factory overheadRates per direct labor hr.,based on 100% of normalcapacity of 19,310 directlabor hrs.:Variable cost, $4.80$87,910 variable costFixed cost, $7.60$146,756 fixed costEach unit...