Mayfair Co. completed the following transactions and uses a perpetual inventory system. June 4 Sold $700 of merchandise on credit (that had cost $280) to Natara Morris, terms n/15. 5 Sold $6,900 of merchandise (that had cost $2,760) to customers who used their Zisa cards. Zisa charges a 3.0% fee. 6 Sold $5,700 of merchandise (that had cost $2,280) to customers who used their Access cards. Access charges a 2.0% fee. 8 Sold $4,610 of merchandise (that had cost $1,844) to customers who used their Access cards. Access charges a 2.0% fee. 13 Wrote off the account of Abigail McKee against the Allowance for Doubtful Accounts. The $683 balance in McKee’s account was from a credit sale last year. 18 Received Morris’s check in full payment for the June 4 purchase.

Speedy auto repairs uses a job-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. speedy’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 20,000 fixed overhead cost $ 350,000 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 $ 590 direct labor cost $ 109 direct labor-hours used 6