Question

A bag contains 12 balls out of which x are white. If 6 more white balls are put in the bag, the probability of drawing a white ball
is double the probability of drawing a white ball before putting 6 balls. Then the value of x is
4
3
5
6

Answer 1

Then the value of x is three

Answer 2

Answer:

x = 3

Step-by-step explanation:

P(white balls) =X\12

if 6 balls are added then the total number of balls are 18

P(white balls)=6+x/18

given that : if 6 more white balls are put in the bag, the probability of drawing a white ball

is double the probability of drawing a white ball before putting 6 balls.

so

6+x/18=2(x/12)

6+x/18=x/6

6+x=x/6*18

6+x=3x

3x-x=6

2x=6

x=6/2

x=3

HOPE IT HELPS U.........