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      Question

      In a village, the average rainfall for the first four

      days of a week was 132 cm, and for the last four days it was 128 cm. If the weekly average rainfall was 130 cm, what was the rainfall recorded on the fourth day?
      A 100 cm Correct Answer Incorrect Answer
      B 145 cm Correct Answer Incorrect Answer
      C 120 cm Correct Answer Incorrect Answer
      D 130 cm Correct Answer Incorrect Answer

      Solution

      ATQ,

      Total rainfall on the first four days of the week = 132 ├Ч 4 = 528 cm Total rainfall on the last four days of the week = 128 ├Ч 4 = 512 cm Total rainfall in the whole week = 130 ├Ч 7 = 910 cm Rainfall on fourth day of the week = (528 + 512) тАУ 910 = 130 cm

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