Question

A bag contains 5 red balls and some Blue Balls if the probability of getting a blue ball from the bag is thrice that of red ball find the number of blue balls in the bag​

Answer 1

No.of red balls=5

No. Of blue balls=x

Total numbers of balls =5+x

A/q

X/(5+x)=(3×5)/(5+x)

So after solving we get

X=15

So numbers of blue balls =15