Question

A bag contains 12 balls out of which x balls are white. If one ball is taken

out from the bag, find the probability of getting a white ball. If 6 more white
balls are added to the bag and the probability now for getting the white ball is
double the previous one, find the value of x.​

Answer 1

The value of x is 3

Step-by-step explanation:

1)

no of balls=12

no of white balls =x

p(white ball) = no. of favourable outcomes/no of total possible outcomes

= x/12----(1)

2)

if 6 more white balls are put in the bag

no of total balls = 18

no of white balls =x+6

p(white balls)= (x+6)/18---(2)

therefore

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

(x+6)/18 =x/6

x+6 = 18x/6

x+6=3x

6=3x-x

6=2x

2x=6

x=6/2

x=3

Answer 2

Step-by-step explanation:

THANKS YAARR DI YOUR SOO MUCH GREAT AAP SARE ANSWERS SOLVE KARE DETE HO . THANK YOU VERY MUCH .AAP BAHUT BADA MUKAM HASIL KARE ,BOHOT AAGE BADHE