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In a school of 850 boys, 44% of Muslims, 28% Hindus, 10% Sikhs and the remaining of other communities. How many belonged to the other communities?

Correct answer: C. 153

  • A. 173
  • B. 163
  • C. 153
  • D. 143

Explanation

The listed communities make up 44% + 28% + 10% = 82%, so other communities are 100% - 82% = 18%. Thus, 18% of 850 boys = 18/100 x 850 = 153 boys. The likely mistake is choosing 163 by making an arithmetic error when finding the remaining percentage.

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Percentages express a quantity as parts per hundred and support calculations involving increases, decreases, discounts, commissions, taxes, and successive changes. Questions require distinguishing percentage change from percentage points and identifying the original value when a final value and its percentage change are given.

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