Activity Cost Pool Activity Measure Number of parties served Number of diners served Total Activity 5,000 parties 12,200 diners $ 33,600 10,500 drinks Cost 15,000 96,380 Serving a party of diners Serving a diner Serving drinks Number of drinks ordered The above costs include all of the costs of the restaurant except for organization-sustaining costs such as rent, property taxes, and top-management salaries. Some costs, such as the cost of cleaning the linens that cover the restaurant's tables, vary with the number of parties served. Other costs, such as washing plates and glasses, depend on the number of diners served or the number of drinks served. Prior to the activity-based costing study, the owner knew very little about the costs of the restaurant. She knew that the total cost for the month (including organization-sustain ing costs) was $180,000 and that 12,000 diners had been served. Therefore, the average cost per diner was $15 Required: 1&2. According to the activity-based costing system, what is the total cost and average cost per diner for serving each of the following parties of dinners? (Round your intermediate calculations to 2 decimal places. Round your Total Cost final answers 2 decimal places and your Average Cost final answers to 3 decimal places.) Total Cost Average Cost a A party of four diners who order three drinks in total. b. A party of five diners who do not order any drinks. c A party of one diner who orders two drinks. per diner per diner per diner