SOLUTION: A jar contains 2 silver coins 4 copper coins, and a second jar contains 4 silver coins and 3 copper coins. If a coin is selected at random from one of the 2 jars, what is the proba
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-> SOLUTION: A jar contains 2 silver coins 4 copper coins, and a second jar contains 4 silver coins and 3 copper coins. If a coin is selected at random from one of the 2 jars, what is the proba
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Question 733330: A jar contains 2 silver coins 4 copper coins, and a second jar contains 4 silver coins and 3 copper coins. If a coin is selected at random from one of the 2 jars, what is the probability that it is a silver coin? The answer is 19/42 but I don't know how they got this. Please help. Answer by Edwin McCravy(20060) (Show Source):
You can put this solution on YOUR website! A jar contains 2 silver coins 4 copper coins, and a second jar contains 4 silver coins and 3 copper coins. If a coin is selected at random from one of the 2 jars, what is the probability that it is a silver coin? The answer is 19/42 but I don't know how they got this. Please help.
Break it down into simple events with AND's and OR's:
The probability that a silver coin is selected is the probability
of the following compound event:
The word "AND" suggests multiplying and the word "OR" suggests addition.
Therefore the probability is
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Edwin
