i need help with 15-20 please

15. If a restaurant's gross receipt for one week is $150,595 and 26% of the amount is for labor, 37% for food cost, and 15% for miscellaneous items, how much is the profit? 16. You need to purchase enough fresh green beans to provide 100 4 ounce servings. It the percent yield is 88%, how many pounds as purchase(AP) would be required? 17. According to a food yield table, ground beef loses 25% weight when grilled. If 25 pounds are purchased, how many 3 oz servings of the cooked meat will be available? 18. How much hamburger will it take to make 300 3 ounce patties with a 20% shrinkage or 80% yield? 19. If ground beef has a 42% yield, how many pounds of beef must be used in spaghetti sauce to ensure a 2 oz, meat portion for 50 people? 20. Historical data tells you that when chicken and roast beef are on the menu together, 65% will order chicken and 35% will order roast beef. How many portions need to be prepared for 425 people