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  9. Q172

WBCS 2022 · Question 172 of 191

What percentage of a 40 metre cloth should be cut off so that the remaining portion is 7 metre?

Reasoning

  1. A17.5
  2. B19
  3. C82.5Correct
  4. D81

Answer: C. 82.5

Explanation

Official WBPSC key (Series A): (C) 82.5. (40−7)/40 = 82.5% must be cut off.

Source: WBCS (Exe) etc. (Prelim) 2022, Series A

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