Question

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9. A bag contains 5 red balls and some blue balls. If the probability of drawing a blue ball is double that of the red ball, then the number of blue balls in a bag is:
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Answer 1

Answer:

10 blue balls........

Answer 2

Answer:

red=5

total=x+5

blue=x

p(B)= x/x+5

p(R) =5/5+x

p(B) =2p(R)

x/x+5=2*5/x+5

x=10

therefore no. of blue balls are 10

Step-by-step explanation:

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