Question

A bag contains 15 balls of which some are white and others are red. If the probability of drawing a red ball
is twice that of a white ball, find the number of white balls in the bag.​

Answer 1

Answer:

Total number of balls in the bag =15.

Let the number of white balls be x.

Then the number of red balls =15−x.

The probability of drawing a white ball =x/15.

Probability of drawing a red ball =(15−x)/15

Given the probability of drawing a red ball is twice that of a white ball.

(15−x)/15=2×(x/15)

15−x=2x

3x=15

x=15/3=5

Hence the number of white balls is 5

Step-by-step explanation:

hope it helps you

Answer 2

Answer:

there will be 5 white balls because if we make twice of white balls then there are 10 red balls so there are 10 red balls and 5 white balls and total 15 balls