India Exam Junction

22. If all other data remains same, how many cinema artists who are not proficient in any of these three skills should become proficient in all three, so that the above said ratio between number of cine-artists who are not proficient in any of these three skills (X0) to those who are proficient in all three (X3) should now become X0 : X3 = 1 : 4 ?

  1. 12

  2. 21

  3. 15

  4. 10

Correct Answer :

Solution

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