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WBCS Preliminary Examination 2021 — General Studies · Question 186 of 200

Q186
ArithmeticPercentage, Profit & Loss
480 students out of 1500 are enrolled in NCC. What percentage of students are not there in NCC?
  1. a.70%
  2. b.68%
  3. c.73%
  4. d.64%

Answer: (B) 68%

Students not in NCC $=1500-480=1020$. Percentage $=\frac{1020}{1500}\times100=68\%$. Alternatively, those enrolled are $\frac{480}{1500}\times100=32\%$, so the rest are $100-32=68\%$. Quick check: 10% of 1500 is 150, and $480=3.2\times150$, i.e., 32% are enrolled.

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