SOLUTION: A box contains 3 blue and 4 red marbles while another box contains 2 blue and 5 red marbles. A marble drawn at random from one of the boxes turns out to be blue. What is the probab

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Question 1177705: A box contains 3 blue and 4 red marbles while another box contains 2 blue and 5 red marbles. A marble drawn at random from one of the boxes turns out to be blue. What is the probability that it came from the first box?
Answer by ikleyn(53765)   (Show Source): You can put this solution on YOUR website!
.

The probability is


     P =  =  = 0.6 = 60%.     ANSWER

Solved.

The formula used is self-explanatory.



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