In a box of 36 pencils, 20 are sharpened. what is the ratio of sharpened pencils to unsharpened pencils?

Alice is paying her bill at a restaurant. the tax on the cost of her meal is 5%. she decides to leave a tip of 20% of the cost of the meal plus the tax. write an expression for her total bill if the cost of her meal is m dollars. write your answer in simplified form.