A bag contains 6 green marbles, 18 red marbles, 2 white marbles, and 4 black marbles. What is the probability of drawing a black marble out of the bag? 2/15 1/30 1/4 1/3

Question

A bag contains 6 green marbles, 18 red marbles, 2 white marbles, and 4 black marbles. What is the probability of drawing a black marble out of the bag?                                                                                                      2/15        1/30           1/4          1/3

anonymous · Answer

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anonymous · Answer

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anonymous · Answer

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anonymous · Answer

Probability is the number of "favorable" outcomes divided by the number of possible outcomes.  

Since there are 30 marbles in the bag, there are 30 possible outcomes.  4 of those marbles are black, so 4 outcomes are "favorable" 

So the probability of picking a black is 4/30

rainbowcupcake7997 · Answer

2/15

rainbowcupcake7997 · Answer

add them all up=30   4 black ones -> 4/30 then divide by two  2/15

anonymous · Answer

1/4