SOLUTION: The probability that San Francisco plays in the next super Bowl is 9 times the probability that they do not play in the Super Bowl. The probability that San Francisco plays in the

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Question 165920: The probability that San Francisco plays in the next super Bowl is 9 times the probability that they do not play in the Super Bowl. The probability that San Francisco plays in the next super Bowl plus the probability that the don't play in the Super Bowl is 1. What is the probability that San Francisco plays in the next Super Bowl?

I thought you would use the equation: Ax + By = C (9x + By = 1)
9x = 1 - By
9x/9 = 1/9 - By/9
x = -By/9 ?
Not really sure where to begin.

Answer by edjones(8007) (Show Source):
You can put this solution on YOUR website!
Let x be the probability that they do not play in the SB.
x+9x=1
10x=1
x=1/10
9/10 probability that the play in SB.
.
Ed