Foundation June 2019 Paper 1R Q9
9 A bag of 11 counters contains
3 purple counters
2 orange counters
6 white counters
A counter is going to be taken at random from the bag.
(a) Find the probability that the counter will be
(i) orange
(ii) not white
(iii) green
(3)A box of 12 toy cars contains
3 red cars
4 blue cars
5 yellow cars
Some extra red cars are put in the box.
When a car is taken at random from the box, the probability that the car is yellow is \(\dfrac{1}{6}\)
(b) Work out the number of extra red cars that are put in the box. (2)
| Scheme | Marks |
|---|---|
| (i) \(\dfrac{2}{11}\) | B1 |
| (ii) \(\dfrac{5}{11}\) | B1 |
| (iii) 0 | B1 |
| (3) |
Notes
B1: oe e.g. 0.18….
B1: oe, e.g.0.45…
B1: oe e.g. \(\dfrac{0}{11}\)
| Scheme | Marks |
|---|---|
| \(\dfrac{1}{6} = \dfrac{5}{30}\) oe or 5 × 6 (= 30) | M1 |
| 18 | A1 |
| (2) | |
| (5 marks) |