In a society of 80 resident families who subscribe newspapers, 60% of them subscribe The Hindu newspaper, 80% of them subscribe regional language newspaper and 70% of them subscribe TOI. How many families could, at the least, be subscribing to all the three newspapers
(a) 0%
(b) 5%
(c) 10%
(d) 20%

• hindu newspaper is 60% of 80=48
  reginal newspaper is 80% of 80=64
  TOi newspaper is 70% of 80=56
  atleast subscribing to all newspaper=hcf(48,64,56)=8
  x%of 80=8 then ans is 10%
  
• 9 years agoHelpfull: Yes(23) No(0)
• HCF(48,56,64)=8=10%(ANS)
  
• 9 years agoHelpfull: Yes(12) No(5)
• Ans-> 10%
  Total no of families who take newspaper=80
  Hindu newspaper=60%=48
  Regional newspaper=80%=64
  toi newspaper=70%=56
  Now,to find common families take H.C.Fof these three (48,64,56) = 8
  Therefore,(8/80)*100=10% is the common families who take all newspaper.
• 9 years agoHelpfull: Yes(2) No(0)
• ans-5%
  use venn diagram approach
  
• 9 years agoHelpfull: Yes(0) No(29)
• Pls explain answers
• 9 years agoHelpfull: Yes(0) No(1)
• please can you explain briefly
• 9 years agoHelpfull: Yes(0) No(2)
• hcf =8...i...e 10%
  
• 9 years agoHelpfull: Yes(0) No(1)
• How did Dheeraj applied Venn Diagram method of Set theory since here there are too many unknowns
  could you tell me how to apply Venn Diagram here
• 9 years agoHelpfull: Yes(0) No(0)
• ans is 10%
• 8 years agoHelpfull: Yes(0) No(0)
• (100-60)+(100-80)+(100-70)-100=10%
• 8 years agoHelpfull: Yes(0) No(0)
• hcf of 60 80 70
  is 2*5= 10
• 8 years agoHelpfull: Yes(0) No(0)
• 40% of 80=48
  80%of80=64
  70%of80=56
  hcf(48,64,56)=8
  x%of 80=8 then ans is 10%
• 8 years agoHelpfull: Yes(0) No(0)