a bag contains 5 red balls and some blue balls if the probability of drawing a blue ball is double that of a red ball determine the number of blue balls in the bag
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Answer:
Number of Red balls = 5
Number of Blue balls = 2× red balls
= 2×5
= 10
Total number of balls = 15
Favourable number of Blue balls = 10
Total number of balls = 15
P(A) = Favourable number of Blue balls/Total number of balls
= 10/15
= 2/3
Hence, the probability of Blue balls in bag is 2/3.
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