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      Question

      The average daily income of a daily wage worker, in the

      month of December is Rs. 120. If his average income on 1st 12 days of the month is Rs. 90 and on last 17 days of the month is Rs. 120, then find his average income on remaining two days of the month.
      A Rs. 300 Correct Answer Incorrect Answer
      B Rs. 230 Correct Answer Incorrect Answer
      C Rs. 280 Correct Answer Incorrect Answer
      D Rs. 590 Correct Answer Incorrect Answer
      E Rs. 110 Correct Answer Incorrect Answer

      Solution

      His total income in the month = 31 × 120 = Rs. 3720
      His income of 1st 12 days = 12 × 90 = Rs. 1080
      His income in last 17 days = 17 × 120 = Rs. 2040
      Therefore, his income in the remaining two days = 3720 – (1080 + 2040) = Rs. 600
      Required average = (600/2) = Rs. 300

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