SOLUTION: There are red, blue, and yellow balls in a bag. There is 7 red, and 3 blue. The probability of getting a red ball is 1/7. How many yellow balls are there?

SOLUTION: There are red, blue, and yellow balls in a bag. There is 7 red, and 3 blue. The probability of getting a red ball is 1/7. How many yellow balls are there?

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Question 1140975: There are red, blue, and yellow balls in a bag. There is 7 red, and 3 blue. The probability of getting a red ball is 1/7. How many yellow balls are there?
Answer by ikleyn(52795) (Show Source): You can put this solution on YOUR website!
.

 = .


7*7 = 7 + 3 + x

49 = 10 + x


x = 49-10 = 39.


ANSWER.  39 blue balls.

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