15 Here is the floor plan of a rectangular room.
3m
4.5m
Not to scale
8x
Tim buys carpet tiles for this room.
Each tile is a square measuring 50 cm by 50 cm.
The tiles are only sold in packs of ten.
Each pack costs £20.
Tim pays for fitting at a rate of £7.50 per square metre, with any fraction of a square metre rounded up.
Work out the total cost of the tiles and fitting.