Abag contains 16 green marbles, 12 red marbles, 15 white marbles, and 7 black marbles.
what is the probability of drawing a green marble out of the bag?
a. 1/16
b. 1/4
c. 8/25
d. 8/17

Since there are 16 green marbles out of 50 marbles
It is simply:
 
Simplified:

Answer is C. 

Probability  = Number of outcomes / Total number of possible outcomes.

So, using this formula we can get our answer
To get total number of possible outcomes we have to add all the marbles
i.e. 16 + 15 + 12 + 7 = 50

And now plugging it in the formula
Probability (drawing a green marbles) = 16/50
                                                                  = 8/25

So, Correct option is C.

Hope this helps you...  :D

3x+9+4x+x=8x+9that's the answer for your question.