SOLUTION: The probability that San Francisco plays in the next Super Bowl is nine times the probability that they do not play in the next Super Bowl. The probability that San Francisco plays

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Question 259382: The probability that San Francisco plays in the next Super Bowl is nine times the probability that they do not play in the next Super Bowl. The probability that San Francisco plays in the next Super Bowl plus the probability that they do not play is 1. What is the probability that San Francisco plays in the next Super Bowl?
Found 2 solutions by Fombitz, stanbon:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
P=9%2ANP
P%2BNP=1
9%2ANP%2BNP=1
10NP=1
NP=0.1
P=9%2ANP=0.9
The probability that San Francisco plays in the next Super Bowl is 0.9.

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The probability that San Francisco plays in the next Super Bowl is nine times the probability that they do not play in the next Super Bowl. The probability that San Francisco plays in the next Super Bowl plus the probability that they do not play is 1. What is the probability that San Francisco plays in the next Super Bowl?
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Let Prob(not play) = x
Then Prob(play) = 9x
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x + 9x = 1
x = 1/10 = 0.1 is the probability SF does not play in the SB.
9x = 0.9 is the probability SF does play in the SB
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