108 carpet tiles
it would be 81 tiles
39
To cover 720 sq feet of floor with 18" x 18" tile, you would need 320 tiles.
Interlocking floor tiles are not preferable used over carpet. The best surface to lay tile or any other flooring product is on a firm and solid surface that out give. Carpet goes down when you step on and makes it so the interlocking tiles will eventually come unlocked by stepping on it. I would not recommend that you install any type of flooring until your carpet is taken out. However if your looking for a good interlocking floor tile I would recommend Swisstrax. They have a great product. And they are great to work with. Sources: www.swisstrax.com www.bigfloors.com www.racedeck.com
Swisstrax sells a good durable product that makes your garage look good. They sell interlocking tiles that are easy to install. The tiles are resistant to battery acid. I would recommend that you cover your garage floor with Swisstrax.www.swisstrax.com
16 tiles but you'll still have 4 inches of floor to cover
If the floor tiles are measured in inches and the room is measured in feet then the tiles are 1sq feet and the room is 6x8 = 48 sq feet so you would need 48 tiles.
300
324
If that is 60" tiles it would take 16 total.
you need to know how wide the floor is in addition to how long. Number of tiles is lenght x width
Assuming the tiles are 1 foot squares, you would need 10*15 = 150 tiles.