Question

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

Answer 1

It is obvious that since number of blue balls = 3 * number of red balls,

Number of blue balls = 3 * 5 = 15 balls

Total number of balls in the bag = 15 + 3 = 18