78% consumers selected at least one brand among A, B and C brands during a brand survey. In it, 50% favoured Brand A;30% favoured Brand B and 20% favoured Brand C. If 5% of those favoured all brands, what percentage of consumers favoured more than one of the three brands?

• let x% select A n B
  y% select B n C
  z% select C n A
  now,
  => [78-5-(x+y+z)]=(50-5-x-y)+(30-5-x-y)+(20-5-y-z)
  => (x+y+z)= 12%
  
  now
  
  78-5-12= 61% people (ans)
• 10 years agoHelpfull: Yes(5) No(2)
• 0.17
  p(a)+p(b)+p(b)-p(a+b+c)-x=p(atlst onea)
• 10 years agoHelpfull: Yes(2) No(5)