SOLUTION: a marble is selected at random from a jar containing 5 red marbles, 3 yellow marbles, and 4 green marbles. what are the odds in favor of selecting a red marble?

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Question 588913: a marble is selected at random from a jar containing 5 red marbles, 3 yellow marbles, and 4 green marbles. what are the odds in favor of selecting a red marble?
Found 2 solutions by edjones, stanbon:
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
5+3+4=12
5/12
12-5=7
5 to 7 the odds in favor of selecting a red marble.
.
Ed

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
a marble is selected at random from a jar containing 5 red marbles, 3 yellow marbles, and 4 green marbles. what are the odds in favor of selecting a red marble?
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"odds for red" = P(red)/P(not red) = [5/(5+3+4)]/[(3+4)/5+3+4] = 5/7 = 5:7
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Cheers,
Stan H.