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      Question

      Anita spends 18% of her monthly income on rent and 70% of

      the rest on household expenditure. If she saves Rs. 1,890, then find her monthly income.
      A Rs.7,680 Correct Answer Incorrect Answer
      B Rs.5,625 Correct Answer Incorrect Answer
      C Rs.6,324 Correct Answer Incorrect Answer
      D Rs.7,500 Correct Answer Incorrect Answer

      Solution

      ATQ,

      Let the monthly income of Anita be Rs. 100b.

      Money spent on rent = 18% of 100b = (0.18) ├Ч 100b = Rs. 18b

      Remaining money = 100b тАУ 18b = Rs. 82b

      Money spent on household expenditure = 70% of 82b = (0.70) ├Ч 82 = Rs. 57.4b

      Savings of Anita = 82b тАУ 57.4b = Rs. 24.6b

      So, 24.6b = 1,890

      Or, тАШbтАЩ = 76.8

      Therefore, monthly income = Rs.7,680

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