The dimensions of Mr. Mallory’s rectangular sun room is 13.6feet by 12.75 feet. He will cover the floor with tile. One box of tiles covers 10 square feet and costs $15.75 per box. How much will the floor project cost Mr. Mallory?
Since there is no indication of the dimensions of a tile, we'll just do this the easy way.
(13.6 * 12.75)/10 * 15.75 = $273.11
floor_area/box_area = #boxes * price/box = cost