1. In a town of 10,000 families it was found that 40% families buy newspaper A, 20% families buy newspaper B and 10% buy C. 5% buy AB, 3% buy BC and 4% buy AC. If 2% families buy all the three, find the number of families which buy i) A only ii) B only iii) none of A,BC.

  • -2
  1. no. of people purchase newspaper a only=40/100*10000=4000people
  2. no. of people purchase newspaper b only=20/100*10000=2000people
  3. %of people purchase no newspaper=100-%of people purchase newspape


now no of people=14/100*10000=1400

  • -62
What are you looking for?