A bag contains 7 blue marbles and 9 red marbles. A marble is removed at random and replaced by three of the other color. what is the probability that the marble removed is blue? Answer your question in a simplified fraction.

7/16

Step-by-step explanation:

Given that:

Number of Blue marbles = 7

Number of red marbles = 9

Probability that marble removed is blue :

Probability = ( number required outcome / Total possible outcomes)

Total possible outcomes = total number of marbles = 7 + 9 = 16

Required outcome = number of blue marbles = 7

P(blue marble is removed) = 7 / 16

10 down (bang1)

5 up

5down (2)

2.5 up

2.5 down (3)

1.25 up

1.25 down (4)

now add them up : )

hoped i lol