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a box contains 4 red balls 5 green balls and some white balls if the probability of red ball is 1 by 3 then number of white balls are |
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Answer» Answer: There are 3 WHITE balls Step-by-step explanation: Number of red balls=4 Number of Green balls=5 Probability of red ball=1/3 To find : Number of white balls. Solution: LET the TOTAL number of balls be X and total number of white balls be W. Probability of the red balls = (Number of red balls) ÷ (total number of balls) 1/3=4/X X=4×3=12 The total number of balls are 12. As we know that there are white Red and Green balls, The total number of balls = red balls+green balls+white balls 12=4+5+W 12=9+W -W=9-12 -W=(-3) W=3 Ans : Thus, there are 3 white balls. |
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