Question

A bag contains 15 balls , out of which some are white and others are black. If the probability of drawing a black ball at random from the bag is two third , then find how many white balls are there in the bag

Answer 1

Let the no of white balls be x.

total balls = 15

x/15 =2/3

15×2= 3x

30 =3x

x =30/3

=10 balls

Answer 2

Answer:

5

Step-by-step explanation:

Let black balls be x

Then probability of getting black ball is x/15

x/15=2/3(given)

Hence x=10

Total=15

White balls=15-10=5