SOLUTION: please help me solve this question maam/sir; Box 1 contains 30 red and 70 white balls, box 2 contains 50 red and 50 white balls, and box 3 contains 75 red and 25 white balls. The

Question 1161325: please help me solve this question maam/sir;
Box 1 contains 30 red and 70 white balls, box 2 contains 50 red and 50 white balls, and box 3 contains 75 red and 25 white balls. The three boxes are all emptied into a large box, and a ball is selected at random. If the selected ball is red, what is the probability that it came from box 1?
Answer by ikleyn(52781) (Show Source): You can put this solution on YOUR website!
.


In all there are  30 + 50 + 75 = 155 red balls.


30 of them came from the box 1.


Therefore, the probability under the question is  P =  = .    ANSWER

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