Thank you if you solve this for me !!

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

Klmn and pqrs are similar trapezoids. which side of pqrs corresponds to lm

If a revenue in total for a month was $9,950, fixed expenses were $9,000, and variable expenses were $300 what would be the total profit/ loss for the month?