I know you have to use percents and discounts so maybe you can start of with 28%/100 and that should equal you 0.28. So then it tells you the restaurant sold 300 dishes and each of the dishes are $20. So I think you need to multiply 300 x 20 and it will equal you 6,000 and then I think you just need to do something with the 6,000 and the 28%. Hope this helped :)