Question

There are some coloured pins in a bag.

The pins can be green, yellow, purple or grey.
A pin is going to be taken at random from the bag.
The table shows the probabilities of picking a purple or grey pin.
Colour Green | Yellow Purple Grey
Probability
0.35 0.25
The probability of picking a green pin is three times the probability of picking a
yellow one.
a) Complete the table. (2)
+
There are 14 purple pins in the bag.
b) Work out how many green pins are in the bag.

Answer 1

a) green=0.3, yellow=0.1

b) 12

Step-by-step explanation:

A

a) 0.35+0.25=0.6

1-06=0.4

0.4-0.3=0.1

b) 0.35=7/20=14

0.25=1/4=5/20=10

0.1=1/10=2/20=4

0.3=3/10=6/20=12