A bag contains 8 red balls and some blue balls.If one ball is drawn randomly the probability of Drawing Red ball to a Blue ball are in a Ratio 5:2 , determine the probability of Drawing blue ball from the bag
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Step-by-step explanation:
probability of drawing a red ball to a blue ball are in the ratio 5:2
probability of drawing red ball = 5P
probability of drawing Blue ball =2P
Total Probability = 5P + 2P = 7P
probability of drawing a blue ball from the bag = 2P/7P = 2/7
additional info
To find number of blue balls in Bags
Let say blue balls = B
Total Balls = 8 + B
B /(8 + B) = 2/7
=> 7B = 16 + 2B
=> 5B = 16
=> B = 16/5
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