9. A vehicle maintenance company can repair 3 trucks per hour. Though the machine can keep running for the whole day, considering the workload of the workforce, the company only arrange 16 working hours with two shifts of workers. On the first day, power cut occurs for 2 hours. The daily utilization should be: A. 90.1% B. 58.3% C. 87.5% D. 48.6% 10. A copy center faces the daily demand of 900 books. The standard processing time for each book is 5 minutes. Though the center arranges 4 shifts with 6 hours per shift to keep the copy machines running without stopping the machine efficiency proves to be only 75% with a 10% defective output due to paper jam and toner problems. How many copy machines are needed? AS B.6 C.7 D. Cannot judge 11. According to the information on the chart, which of the following statement is CORRECT? $35.00 Avenue poesnou -Total costs $30,00 $25.00 $20.00 $15.00 $10.00 $5.00 $0.00 Fixed costs --- Variable costs IK 2K 3K 4K SK 6K 7K 8K9K 10X A. When the company sells 3K products, it ears profits. B. When the revenue is $20,000, the total costs are larger than the total sales value. C. The company can make profits if it sells all 10K products. D. The break-even point is achieved when the company sells 4K products