Example 6. Ajou Car Center is a small business that does automobile repair and repair. The Ajou Car Center provides free rental of the company's cars to customers who leave their cars at the car center for repairs/repair. - Currently, the Ajou car Center operates four such service company cars.- In general, an average of 15.5 cars are left to the car center for repairs/repair per week (operating five days a week). At present, there are only four company cars, so sometimes it is not possible to rent a car to a customer who is in charge of repairs/repair (probability Pb=28.3%). In such cases, $50 off the repair/repair price is offered. Normally, repairs/repair take a day. But sometimes it can be longer than this. On average, 1.2 days are used for repairs/repair. Therefore, company cars will also be lent 1.2 days on average. + The car center rents its car from a large car-leasing company outside, which costs $350 a month for a car. The Ajou Car Center believes that renting a car costs $12 for fixed maintenance and cleaning inside and outside of the car. + Analyze the cost of a month at the car center. It runs 20 days a month.' Example 6. Ajou Car Center is a small business that does automobile repair and repair. The Ajou Car Center provides free rental of the company's cars to customers who leave their cars at the car center for repairs/repair. - Currently, the Ajou car Center operates four such service company cars.- In general, an average of 15.5 cars are left to the car center for repairs/repair per week (operating five days a week). At present, there are only four company cars, so sometimes it is not possible to rent a car to a customer who is in charge of repairs/repair (probability Pb=28.3%). In such cases, $50 off the repair/repair price is offered. Normally, repairs/repair take a day. But sometimes it can be longer than this. On average, 1.2 days are used for repairs/repair. Therefore, company cars will also be lent 1.2 days on average. + The car center rents its car from a large car-leasing company outside, which costs $350 a month for a car. The Ajou Car Center believes that renting a car costs $12 for fixed maintenance and cleaning inside and outside of the car. + Analyze the cost of a month at the car center. It runs 20 days a month