Question

A bag contains 4 black marbles, 5 red marbles, and 1 blue marble. What is the probability of drawing a red marble or a blue marble from the bag?

Answer 1

0.6 or 60%

Explanation:

There are 10 total marbles in the bag. To find the probability, we have to add how many red marbles out of the total marbles that there are with how many blue marbles out of the total marbles that there are.

`(5)/(10)+(1)/(10) =(6)/(10) \\`

`(6)/(10)` converted to a decimal is 0.60 or 60% as a percentage.

Answer 2

3/5

Explanation:

4 black marbles, 5 red marbles, and 1 blue marble = 10 marbles

P( red or blue) = number of red or blue marbles / total

= 5+1/ 10

=6/10

=3/5