Question

5 red balls and some Blue Balls if the probability of drawing a blue ball is double that of a readable determine the number of blue balls in the bag

Answer 1

P( blue balls)=2p( red Ball)
Therefore blue balls=2*5
=10 balls

Answer 2

Hey... I think this can be ur answer!!

Red balls = 5
Blue balls =x
Total balls =x+5

Now probability of red ball = 5/ x+5

Probability of blue ball = x / x+5

Now, ATQ,
x/x+5 = 2(5/x+5)
x/ x+5=10/x+5
x(x+5) = 10(x+5)
x = 10

So, no. Of blue balls is 10..

Hope it helps you dear ☺️☺️☺️