A bag has red, green, and blue marbles. The probability of selecting a red marble is 1/3 and the probability of selecting a green marble is 2/5, what is the probablility of selecting a blue marble
Mathematics · High School · Thu Feb 04 2021
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Given the statement:
A bag has red, green, and blue marbles. The probability of selecting a red marble is 1/3 and the probability of selecting a green marble is 2/5.
Determine the probability of selecting a blue marble.
Solution:
In order to determine the probability of selecting a blue marble, we simply needed to subtract ⅓ and 2/5 to 1. First we must add the two values. ⅓ can be written as 5/15, and 2/5 can be written as, 6/15
= 5/15 + 6/15
= 11/15
Subtract 11/15 to 1 or 15/15
= 15/15 - 11/15
= 4/15
The probability of selecting a blue marble is 4/15.
Final answer:
The probability of selecting a blue marble is 4/15.