Question

a bag contains 18 balls out of which X balls are red if one ball is drawn at random from the bag bag what is the probability that it is not read if more red balls are put in the bag the probability of drawing a red ball will be 9 by 8 times the probability of drawing a red ball in the first case find the value of x​

Answer 1

Answer:

Step-by-step explanation:

Total no. of balls=18

No. of red balls=x

Probability(red ball)=x/18

Two more red balls are added in the bag.

Now, total no. of balls=18+2=20

Total no. of red balls=x+2

Now, Probability(red ball)=x+2/20

From question,

x+2/20=9/8 × x/18

16x+32=20x

4x=32

x=32/4=8

HOPE IT HELPS!!