Please help will give Brain to right answer

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

Apackage of five erasers cost 0. $.39 at this rate how many how much would 60 erasers cost in dollars and cents

Can someone me immediately, this is due by midnight! if you can't see the question, i'll text it to you. show the steps you took to get your answer.