Due to the pandemic, Old European restaurant needs to limit its hourly capacity to 40 customers.
The restaurant used to face a daily price-response function in the form of d(p)=200-10p for a meal (p is the average selling price per meal).
Find the restaurant's optimal selling price and the optimal total revenue.
Optimal selling price: Round your final answer to 2 decimal places.
Optimal total revenue: Round your final answer to 2 decimal places.