A bag contains white, red,& black balls only a ball is draw at random from the bag if probability getting a white ball is 3/10 & that a white ball is 2/5 then find the probability of getting a red ball if the bag contains 20 black balls then find the total number of balls in the bag?
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Answer:
3/10
Step-by-step explanation:
no of white balls = 15
total no of balls = 50
no of black bag = 20
no of red balls = 15
P(getting red ball) = 15/50
= 3/10
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