alaram alaram
  • 03-08-2020
  • Mathematics
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DeanR
DeanR DeanR
  • 03-08-2020

I suppose this is saying that 20%, 25% and 55% are each a whole number of science students.  The GCD is 5%, 1/20th, so minimum 20 people total.  55% are studying biology, that's 11.

Answer: C. 11

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