# 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,

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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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Solution: Let us assume number of blue balls = x

Then, total number of balls = x + 5

Then;

Number of blue balls = 10