SOLUTION: An urn contains 40 balls. Some are red balls and the rest are white balls. If the probability of extracting a white ball is 0.75, how many white balls are there?

Question 1126496: An urn contains 40 balls. Some are red balls and the rest are white balls.
If the probability of extracting a white ball is 0.75, how many white balls are there?

Answer by Shin123(626) (Show Source): You can put this solution on YOUR website!
If the probability of picking a white ball is 0.75, that means that 0.75 of the 40 total are white.

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