SOLUTION: a box contains 25 balls and 5 of them are worth $25.00 and the remainder are valued at $10.00, I reach in the box, remove one and give it to Billy. Then I reach in again and repea

Algebra ->  Probability-and-statistics -> SOLUTION: a box contains 25 balls and 5 of them are worth $25.00 and the remainder are valued at $10.00, I reach in the box, remove one and give it to Billy. Then I reach in again and repea      Log On


   

Question 438087: a box contains 25 balls and 5 of them are worth $25.00 and the remainder are valued at $10.00, I reach in the box, remove one and give it to Billy. Then I reach in again and repeat the process a second time. What is the probability that the second ball was worth $25.00 if the first one was worth $10.00?
Thank You...this is the last problem on my test and I have not a clue what to do except that I know that when I reach in again my chances are 1/24.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
a box contains 25 balls and 5 of them are worth $25.00 and the remainder are valued at $10.00, I reach in the box, remove one and give it to Billy. Then I reach in again and repeat the process a second time. What is the probability that the second ball was worth $25.00 if the first one was worth $10.00?
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There are 24 balls left in the box.
5 of them are $25 balls.
P(2nd ball = 25) = 5/24
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cheers,
Stan H.