Q. There are total 15 people. 7 speaks French and 8 speaks Spanish 3 do not speak any language. Which part of total people speaks both languages.

• If x no of people speak both languages then
  
  15 = 8+7-x+3
  x=3
  so part of total people speaks both languages = 3/15 =1/5
• 12 years agoHelpfull: Yes(84) No(10)
• as on whole there are 15 people hence out of which 3 doesnot speak both so 12 are who speak any language.
  A u B=12
  A=7
  B=8
  A intersection B=3
• 10 years agoHelpfull: Yes(18) No(3)
• let x be the people who spks both languages (draw vein diagram) then
  x-7 spks french,
  x-8spks spanish
  15=x+x-7+x-8+3---->1
  x=9(satifies eqntn 1)
  req ans=9/15=3/5
• 10 years agoHelpfull: Yes(3) No(12)
• 3 part of 15 will speak both languages
• 10 years agoHelpfull: Yes(2) No(1)
• 3
  Only 12people speak any Language
  7+8=15
  3 more than given speakers
  So 3 must speak both languages
  
• 9 years agoHelpfull: Yes(1) No(2)
• 18/10-20/10=-2/10=-0.2
• 10 years agoHelpfull: Yes(0) No(7)
• 0 no one speaks both language
• 9 years agoHelpfull: Yes(0) No(3)