A bag contains 12 balls out of which x are black balls. Find the
probability of getting a black ball if one ball is drawn. If 6 more
blacks balls are added in the bag, the probability of getting a
black ball will be double. Find x.
Answers
Answered by
4
x/12 is the probability of getting a black ball if one ball is drawn.
If 6 more balls are added then the probability would be (x+6)/18.
If 6 more balls are added then the probability would be (x+6)/18.
Answered by
9
Answer:
Step-by-step explanation:
Total number of balls = 12
Total number of black balls = x
P (getting a black ball) = x/12
If 6 more black balls are put in the box, then
Total number of balls = 12 + 6 = 18
Total number of black balls = x + 6
P (getting a black ball now) = x + 6 /18
Atq,
2(x/12) = ( x+. 6 /18)
3x = x+6
2x=6
x = 3
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