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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