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Discussion

  1. The average age of four players is 18.5 years. If the age of the coach is also included, the average age increases by 20%. The age of the coach is ?
    1. 28 years
    2. 31 years
    3. 34 years
    4. 37 years
  1. Correct Option: D

    New average = 120% of old average
    =120% of 18.5
    = (120 x 18.5) / 100
    = 22.2

    Age of coach = Total weight of 4 players and coach - total weight of 4 players
    = 5 x 22.2 - 4 x 18.5
    = 37 years


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