Question

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 1
6
(b) Work out the number of extra red cars that are put in the box.

Answer 1

Answer:

Answer:

Number of extra cars that are added are 18.

Step-by-step explanation:

Let the number of cars that are added be x.

Total number of cars after adding = 12 + x

Number of yellow cars = 5

Probability = Desired outcome / Total number of possible outcomes

1/6 = 5 / 12 + x

12 + x = 5 × 6 = 30

x = 18