Question

bag contains 15 white and some black balls if the probability of drawing a black ball from the bag is twice that of drawing a white find the number of black balls in the bag​

Answer 1

Answer:

Step-by-step explanation:

No. of white balls=15

No. of black balls =x

Total no. of outcomes =15+x

P(white balls) =15/(15+x)

P(black balls) =x/(15+x)

According to the question

x/(15+x)=3*15/(15+x)

x=3*15

x=45

Total no. of balls 45+15=60