Speedy Auto Repairs uses ajob-order costing system. The company's direct materials consist of replacement parts installed in customer vehicles, and its direct labor consists of the mechanics' hourly wages. Speedv's overhead costs include various items, such as the shop manager's salary, depreciation of equipment, utilities, insurance, and magazine subscriptions and refreshments for the waiting room. The company applies all of its overhead costs to jobs based on direct labor-hours. At the beginning of the year, it made the following estimates: Direct labor-hours required to support estimated output SILODD Fixed overhead cost $ 405,000 Variable overhead cost per direct labor-hour $ 1.00 Required: '1. Compute the predetermined overhead rate. 2. During the year, Mr. Wilkes brought in his vehicle to replace his brakes, spark plugs, and tires. The following information was available with respect to his job: Direct materials $ 619 Direct labor cost $ 113 Direct laborhours used 4 Compute Mr. Wilkes' total job cost. 3. If Speedy establishes its selling prices using a markup percentage of 40% of its totaljob cost, then how much would it have charged Mr. Wilkes