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 play

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Question 146121: 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 is 1. What is the probability that San Fran plays in the next Super Bowl?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let y= probability they play in Superbowl
Let n= probability they do not
y+%2B+n+=+1
y+=+9n
9n+%2B+n+=+1
10n+=+1
n+=+1%2F10
y+%2B+%281%2F10%29+=+1
y+=+1+-+%281%2F10%29
y+=+9%2F10
The probability they play in next Superbowl is 9/10