A bag contains 16 red balls and 20 blue balls only. How many white balls
MATHEMATICS
JAMB 1998
A bag contains 16 red balls and 20 blue balls only. How many white balls must be added to the bag so that the probability of randomly picking a red ball is equal to 2/5
- A. 4
- B. 20
- C. 24
- D. 40
Correct Answer: A. 4
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