Question

1) A bag contains 5 white balls and some blue balls. If the probability of
drawing a blue ball is double that of a white ball, determine the number of
blue balls in the bag.​

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Let number of blue balls in the bag =x

Total no of balls in bag =5+x [No. of redball =5]

Probability of drawing a blue ball =

No. of blue ball/Total no of ball

P(B)= x/5+x

Probability of drawing a Red ball =

No. of red ball/Total no of ball

P(R)= 5/5+x

Given,

P(B)=2P(R)

x/5+x = 2(5/5+x)

X = 10

Hence, no. of blue balls in the bag =10.