X% of people have tea, y% have coffee, z number of people have both. Find the total number of people?

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ARVIND

  • Oct 17th, 2005
 

x+y-z

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RaviMalik

  • Oct 27th, 2005
 

i think it should be 100 %

like suppose 40 % take tea and 30 % cofee and 10 % both

then people who take tea or cofee is 60 % but who don't take anything is still 40%

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