Q12 of 50 Page 15

A bag contains 4 white balls and some red balls. If the probability of drawing a red ball is 3/5, find the probability of drawing a white ball.

Given: P(Red balls) = 1/4


Explanation:


Let the number of red balls = x


Total balls = (x + 4)


Now,




5x = 3x + 12


2x = 12


x = 6


So, there are 6 red balls in the bag.


Now, total balls = 4 + 6 = 10




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