How many 12 x 24 tiles needed for 5' x 8' room?

To determine how many 12 x 24 tiles are needed for a 5' x 8' room, first convert the dimensions to inches: 5' x 8' is 60" x 96". The area of the room is 60" x 96" = 5760 square inches. Each 12 x 24 tile has an area of 288 square inches. Dividing the room area by the tile area (5760 ÷ 288) gives you 20 tiles needed for the room.