SOLUTION: A bowl contains only red and black marbles.There are x red marbles, with 2 more black marbles than red. If a marble is selected at random, what is the probability that it will be b
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Question 311251: A bowl contains only red and black marbles.There are x red marbles, with 2 more black marbles than red. If a marble is selected at random, what is the probability that it will be black?
a 2/x b x/(x+2) c x/(2x+2) d (x+2)/(2x+2) e 2/(x+2) Answer by Fombitz(32388) (Show Source):
You can put this solution on YOUR website! Red, R-x marbles
Black, B-x+2 marbles
Total, 2x+2 marbles
P(B)=(x+2)/(2x+2)
d) is the correct answer
