Find Out the New Average Height.

Six friends have an average height of 167 cms. A boy with height 162 cm leaves the group. Find the new average height.

  1. 167 cm
  2. 168 cm
  3. 169 cm
  4. 166 cm
Monis Rasool Professor Asked on 9th October 2015 in Maths.
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  • 1 Answer(s)

    Answer: (2) 168 cm

    Explanation:-
    The average of height of six friends = 167 cm
    Then, the sum of the ages of six friends = 6 x 167
    = 1002 cm

    A boy with height 162 cm leaves the group,
    Then, the sum of remaining 5 friends = 1002 – 162
    = 840 cm

    Now, the new average of height = 840/5
    = 168 cm

    Hence, the answer is (2) 168 cm.

    Anurag Mishra Professor Answered on 10th October 2015.
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