Foundation January 2019 Paper 2R Q12
12 The diagram shows the plan of the floor in a room.
Diagram NOT accurately drawn
Alonso is going to cover the floor once with polish.
He buys some tins of polish.
Each tin has enough polish to cover 14 m\(^2\) of the floor.
Each tin costs 9.59 euros.
Work out the total cost of the tins that Alonso needs to buy.
(5)
| Scheme | Marks |
|---|---|
| 9 × 3 (=27) or 8 × 5 (=40) or 3 × 4 (=12) or 9 × 8 (=72) or 5 × 5 (= 25) or 4 × 5 (= 20) | M1 |
| 9 × 3 + 5 × 5 or 5 × 8 + 3 × 4 or 9 × 8 – 5 × 4 (= 52) | M1 |
| ‘52’ ÷ 14 (=3.714....) | M1 |
| ‘4’ × 9.59 | M1 |
| 38.36 | A1 |
| (5) | |
| (5 marks) |
Notes
M1: For correct method to find area of a relevant rectangle
M1: For a fully correct method to find the area of the floor
M1: For a correct method to find number of tins of polish needed
M1: Method to find total cost - must be a whole number of tins rounded up