Hiram's Lakeside Is a popular restaurant located on Lake Washington In Seattle. The restaurant's owner wants to better understand his costs and hired a student Intern to conduct an activity$-$based costing study. The Intern identified three activitles, completed the firststage cost allocations and gathered the activity measure data shown below.

$\backslash$table$[[$Activity Cost Pool,Activity Measure,Total Cost,Total Activity$],[$Serving a party of diners,Number of parties served,$$15,900,5,300$ parties$],[$Serving a diner,Number of diners served,$$120,900,13,000$ diners$],[$Serving drinks,Number of drinks ordered,$$33,280,10,400$ drinks$]]$

The above costs exclude organization$-$sustaining costs such as rent, property taxes, and top$-$management salarles.

Some costs, such as the cost of cleaning the linens that cover the restaurant's tables, vary with the number of partles 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 actlvity$-$based costing study, the owner knew very little about the restaurant costs. She only knew the total cost for the month $($Including organization$-$sustaining costs$)$ was $$180,000$ and $12,000$ diners had been served. Therefore, the average cost per diner was $$15.$

Requlred:

$1$ and $2.$ According to the activity$-$based costing system, what is the total cost and average cost per diner for serving each of the following partles of diners?

Note: Round your Intermedlate calculations to $2$ decimal places. Round your Total Cost flnal answers to $2$ decimal places and your Average Cost final answers to $3$ decimal places.

$\backslash$table$[[$a$.$ A party of four diners who order three drinks in total.,Total Cost,Average Cost$],[$b$.$ A party of five diners who do not order any drinks.,,per diner,$],[$C$.$ A party of one diner who orders three drinks.,,per diner,$]]$