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      Question

      Sana uses x% of her earnings on house rent, then spends

      20% of the remaining on groceries, pays Rs. 9400 as miscellaneous bills, and saves Rs. 7240 from a total of Rs. 32000. Find x.
      A 24 Correct Answer Incorrect Answer
      B 12 Correct Answer Incorrect Answer
      C 42 Correct Answer Incorrect Answer
      D 35 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ, 32000 ├Ч {(100 тИТ x)/100} ├Ч (80/100) тИТ 9400 = 7240 = 32000 ├Ч 80/10000 ├Ч (100 тИТ x) тИТ 9400 = 7240 = 256 ├Ч (100 тИТ x) тИТ 9400 = 7240 25600 тИТ 256x тИТ 9400 = 7240 16200 тИТ 256x = 7240 256x = 16200 тИТ 7240 = 8960 x = 8960/256 = 35

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