Higher June 2018 Paper 5 Q7
7 Here is the floor plan of a rectangular room.
Not to scale
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. [6]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| 225[.00] nfww | 6 | B3 for 54 [tiles] OR | |
| M1 3 × 4.5 oe or 300 × 450 oe or 4.5 ÷ 0.5 or 450÷ 50 oe soi | Could be on diagram | ||
| and M1 0.5 × 0.5 oe or 50 × 50 oe or 3 ÷ 0.5 or 300 ÷ 50 oe soi | Could be on diagram | ||
| AND M1 for their 6 × 20 | their 6 is correct number of packs for their number of tiles – must be positive integer, implied by 120 | ||
| M1 for their 14 × 7.5 | their 14 is their answer to (3 × 4.5) rounded up to next integer, implied by 105 | ||