Can you show me how to solve this problem?
A fast-food restaurant serves hamburgers, cheeseburgers, and chicken sandwiches. The restaurant counts a cheeseburger as equivalent to 1.27 hamburgers and chicken sandwiches as 0.77 hamburger. Current employment is eight full-time employees who each work a 40-hour week.
a. If the restaurant sold 750 hamburgers, 920 cheeseburgers, and 520 chicken sandwiches in one week, what is its productivity? (Do not round intermediate calculations. Round your answer to 2 decimal places.) Productivity hamburger equiv per labor hr
b. What would its productivity have been if it had sold the same number of sandwiches (2,190), but the mix was 730 of each type? (Do not round intermediate calculations. Round your answer to 2 decimal places.) Productivity hamburger equiv per labor hr).