Question

A bag contains 6 red balls and some blue balls. If the probability of drawing a blue ball is twice that if the red ball find the number of balls in the bag

Answer 1

Answer:

Red ball=6

total number of ball be x

probability of red ball=6/6+x

probability of blue ball=x/6+x

according to equation,

x/6+x=2(6/6+x)

so

x=2(6)

x=12