The Venn-diagram below shows the result of a survey conducted at a City Hospital Kathmandu who were attended on a particular day. Set W represents those who complained of body weakness, set H those who complained for headache and set F those who complained of fever. a

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  1. Use the information in the Venn-diagram to find the number of people who complained
    1. body weakness only
    2. body weakness and fever only
    3. headache
  2. Calculate the percentage of those who complained of all the ailments.