Question

A bag contains 5 red balls
and some blue balls. If the probability of drawing a blue ball is double that of red ball, find the number of blue balls in the bag.​

Answer 1

Step-by-step explanation:

let blue balls be x

p(R) = 5/ 5+x

p(B) = x/x+5

p(B) = 2p(R)

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

x+5 gets cannel

x = 2(5)

x = 10

no of blue is 10

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Answer 2

correct answer is 10

hope it's help you