Question

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


GUYS PLZZ ANSWER IT IT'S URGENT

Answer 1

Answer:

x = 10

Step-by-step explanation:

Let there be x blue balls in the bag.

∴ Total number of balls in the bag = 5 + x

Now,

           = Probability of drawning a blue ball =

           = Probability of drawing a red ball =

Answer 2

The answer is 10.

If the no. of blue balls is 10 then total no. of balls will be 15.

Therefore probability for red ball is 5/15 or 1/3

and probability for blue ball is 10/15 or 2/3

(blue ball's probability twice that of red ball's)

So number of blue balls is 10