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WBCS Preliminary Examination 2022 — General Studies · Question 181 of 200

Q181
ArithmeticPercentage, Profit & Loss
What is the percentage of a cloth that should be exactly from 40 metre cloth so that the remaining portion is 7 metre?
  1. a.17.5
  2. b.19
  3. c.82.5
  4. d.81

Answer: (C) 82.5

If the remaining portion is 7 metres, then the portion cut = 40 - 7 = 33 metres. Percentage cut = $\frac{33}{40} \times 100 = 82.5\%$. The question asks for the percentage that should be cut, not the remaining percentage.