The regular price of a space invader game is $52 but it is on sale. the discount is $13. what percent discount is this?

This is a 25% discount.
We can restate this problem as:$13 is what percent of $52?First, let's call the percent we are looking for "p" or p%."Percent" or "%" means "out of 100" or "per 100", Therefore p% can be written as p100.When dealing with percents the word "of" means "times" or "to multiply".Putting this all together we can write this equation and solve for p while keeping the equation balanced:$13=p100×$52$13=$52p100$13×100$52=$52p100×100$52$1300$52=$52p100×100$52$1300$52=$52p100×100$52130052=p25=p