Question

Marsha has a bag that contains 4 green marbles, 8 yellow marbles, and 20 red marbles. If she chooses one marble from the bag, what is the probability that the marble is not red?

Answer 1

Answer: The answer is 3/8

Explanation:

Answer 2

The probability is 0.375

Explanation:

The probability is calculated as a division between the number of options that satisfy an specific condition and the total number of options. So, if Marsha choose one marble from the bag, she has 32 possible options:

• 4 green marbles
• 8 yellow marbles
• 20 red marbles

From these 32 options, there are 12 that are not red:

• 4 green marbles
• 8 yellow marbles

Therefore, the probability P that the marble is not red is calculated as:

`P =(4+8)/(4+8+20)=(12)/(32)=0.375`