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      Question

      The average height of 8 boys in a basketball team is 180

      cm. If the tallest boy leaves, the average becomes 175 cm. Find the height of the boy who left.
      A 200 cm Correct Answer Incorrect Answer
      B 205 cm Correct Answer Incorrect Answer
      C 210 cm Correct Answer Incorrect Answer
      D 215 cm Correct Answer Incorrect Answer

      Solution

      Let the height of the boy who left be โ€˜xโ€™ cm. So, x + (180 โ€“ 5) ร— 7 = 8 ร— 180 x + 175 ร— 7 = 1440 x + 1225 = 1440 x = 1440 โ€“ 1225 x = 215 cm So, height of the boy who left was 215 cm.

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