A bag contains 15 marbles. The probability of randomly selecting a green marble is One-fifth. The probability of randomly selecting a green marble, replacing it, and then randomly selecting a blue marble is 2 over 25 . How many blue marbles are in the bag?

Given:

Total number of marbles = 15

Probability of randomly selecting a green marble = .

Probability of randomly selecting a green marble, replacing it, and then randomly selecting a blue marble = .

To find:

The number of blue marbles.

Solution:

Let the number of blue marbles be x.

It is given that,

Probability of randomly selecting a green marble, replacing it, and then randomly selecting a blue marble is . So,

Multiply both sides by 75.

Therefore, the number of blue marbles in the bag is 6.

24

step-by-step explanation:

if it takes 8 pounds to make 12 divide 12 by 8 and you get 1.5, 1.5 x 16 = 24

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x