Question

A bag contains several marbles. Each marble is purple, white or blue. The probability of choosing a purple marble is 1/4 and the probability of choosing a white marble is 1/8. What is the probability of choosing a blue marble. Write your answer as a fraction

Answer 1

5/8

Explanation:

Three colors

Purple - 2/8 or 1/4

White - 1/8

Blue - ?

Combine White and Purple. You get 3/8. Subtract from all marbles, 8/8. You get 5/8.

Answer 2

5/8

Explanation:

if i were to assume, there are 8 marbles.

1 out of the 8 are white,

2 out of the 8 are purple

so the final 5 should be blue.

the probability of picking a blue marble should be 5/8.