Question

Ritwik draws a ball from a bag that contains white and yellow balls. The probability of choosing a white ball is `2/9`. If the total number of balls in the bag is 36, find the number of yellow balls.

Answer 1

The probability of choosing a white ball = `2/9`

Then, the probability of choosing a yellow ball = `1 - 2/9`

= `(9 - 2)/9`

= `7/9`

Given, total number of balls in the bag = 36

∴ Number of yellow balls = `7/9 xx 36` = 28