Question

A bag contains 5 red balls and some blue balls if the probability of drawing a blue ball from the bag is thrice that of a red ball find no of blue balls in the bag

Answer 1

Answer:15

Step-by-step explanation:

As there are five red balls, and the probability of drawing a red ball is three times the red balls, so the number of red balls would be 5×3=15. Now, total number of balls =20, which gives

Probability of getting a red ball=5/20=1/4

And

Probability of getting a blue ball=15/20=3/4, which is thrice the probability of getting a red ball