A bag contians 5 blue and 8 red and 7 green marbels. A marble is selacted at random. Find the propobility the marbelis not red.
Mathematics · High School · Tue Nov 03 2020
Answered on
Given the statement:
A bag contains 5 blue and 8 red and 7 green marbles.
Determine the probability of drawing a marble that is not red.
Solution:
In order to determine the probability of drawing a marble that is not red, then we can add the total number of marbles, and divide it to the marbles that are colors blue and green
Blue and Green Marbles = 5 + 7
Blue and Green Marbles = 12
Total Number of Marbles = 12 + 5
Total Number of Marbles = 17
Divide 12 by 17
= 12/17
= 0.71
Since we are given a decimal answer, in order to convert it into percentage, we multiply the decimal by 100. Hence, in converting a percentage into decimal, we divide the percentage by 100.
= (0.71)(100)
= 71%
Final answer:
The probability of drawing a marble that is not colored red is 71%