Foundation November 2022 Paper 1 Q10
10
(a) One morning Harper records the first 50 vehicles to pass the school gate.
Harper’s results are shown in this table.
| Type of vehicle | Number |
|---|---|
| Car | 31 |
| Lorry | 3 |
| Motorbike | 7 |
| Van | 9 |
Use Harper’s results to estimate the probability that the next vehicle will not be a motorbike. [2]
(b) One afternoon Reece records some vehicles that pass the school gate.
\(\dfrac{2}{5}\) of the vehicles they record are cars.
For Reece’s results, write down the ratio of cars to not cars.
Give your answer in its simplest form.
.................... : .................... [1]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| \(\dfrac{43}{50}\) or 0.86 or 86% or \(\dfrac{86}{100}\) | 2 | M1 for 43 or \(50 - 7\) or \(31 + 3 + 9\) or \(1 - \dfrac{7}{50}\) | Isw incorrect cancelling of correct fraction but do not allow conversion to incorrect form e.g 43 out of 50 or 43 : 7 for 2 marks |
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| 2 : 3 | 1 | ||