PLZ HELP WITH THIS QUESTION ASAP. 20 POINTS Please answer with detail and show ALL steps to how you completed this problem. I attached a picture of the problem below. THANKS!!! :)

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

Math question.. plz me .. best answer all

Sally deposited money into a savings account paying 4% simple interest per year. the first year, she earned $75 in interest. how much interest will she earn during the following year?