Can anyone me with this question kelsey purchase items from a wholesale website and resells them on her own website. she typically marks up her merchandise 40%. if she purchase an item for 15$, what price should she set for the item?

Ahmed plans to add a rectangular sunroom to his house. the sunroom will have a length of 14 feet and a width of 10 feet, and the construction will cost $40 per square foot. how much more would the sunroom cost if it’s width were increased to 12 feet?