A job shop has four machines and operates 40 hours per week. During the most recent week, machine 1 processed part A for 25 hours at a production rate of 10 parts per hour, and part B for 12 hours at a rate of 7 parts per hour. Machine 2 processed part C for 37 hours at a rate of 14 parts per hour, and was idle 3 hours. Machine 3 processed part D for 15 hours at a rate of 20 parts per hour, and part E for 25 hours at a rate of 15 parts per hour. Machine 4 processed part F for 13 hours at a rate of 9 parts per hour, part G for 12 hours at a rate of 18 parts per hour, and was idle the rest of the week. Determine (a) weekly production output of the shop and (b) average utilization of equipment.