Question

A jar contains 4 red marbles, 6 blue marbles, 3 yellow marbles, and 5 green marbles. If one marble is randomly selected, what is the probability that it is red or green?

Answer 1

50%

Explanation:

4 red + 5 green = 9 marbles

total marbles = 18 marbles

9 is 50% of 18

Answer 2

1/2

Explanation:

4 red marbles, 6 blue marbles, 3 yellow marbles, and 5 green = 18 marbles

P( red or green) = red or green / total

= (4+5) / 18

= 9/18

=1/2